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WriteableBitmap.xml
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WriteableBitmap.xml
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<Type Name="WriteableBitmap" FullName="System.Windows.Media.Imaging.WriteableBitmap">
<TypeSignature Language="C#" Value="public sealed class WriteableBitmap : System.Windows.Media.Imaging.BitmapSource" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi sealed beforefieldinit WriteableBitmap extends System.Windows.Media.Imaging.BitmapSource" />
<TypeSignature Language="DocId" Value="T:System.Windows.Media.Imaging.WriteableBitmap" />
<TypeSignature Language="VB.NET" Value="Public NotInheritable Class WriteableBitmap
Inherits BitmapSource" />
<TypeSignature Language="F#" Value="type WriteableBitmap = class
 inherit BitmapSource" />
<TypeSignature Language="C++ CLI" Value="public ref class WriteableBitmap sealed : System::Windows::Media::Imaging::BitmapSource" />
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Base>
<BaseTypeName>System.Windows.Media.Imaging.BitmapSource</BaseTypeName>
</Base>
<Interfaces />
<Docs>
<summary>Provides a <see cref="T:System.Windows.Media.Imaging.BitmapSource" /> that can be written to and updated.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
Use the <xref:System.Windows.Media.Imaging.WriteableBitmap> class to update and render a bitmap on a per-frame basis. This is useful for generating algorithmic content, such as a fractal image, and for data visualization, such as a music visualizer.
The <xref:System.Windows.Media.Imaging.WriteableBitmap> class uses two buffers. The *back buffer* is allocated in system memory and accumulates content that is not currently displayed. The *front buffer* is allocated in system memory and contains the content that is currently displayed. The rendering system copies the front buffer to video memory for display.
Two threads use these buffers. The *user interface (UI) thread* generates the UI but does not present it to the screen. The UI thread responds to user input, timers, and other events. An application can have multiple UI threads. The *render thread* composes and renders changes from the UI thread. There is only one render thread per application.
The UI thread writes content to the back buffer. The render thread reads content from the front buffer and copies it to video memory. Changes to the back buffer are tracked with changed rectangular regions.
Call one of the <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%2A> overloads to update and display content in the back buffer automatically.
For greater control over updates, and for multi-threaded access to the back buffer, use the following workflow.
1. Call the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> method to reserve the back buffer for updates.
2. Obtain a pointer to the back buffer by accessing the <xref:System.Windows.Media.Imaging.WriteableBitmap.BackBuffer%2A> property.
3. Write changes to the back buffer. Other threads may write changes to the back buffer when the <xref:System.Windows.Media.Imaging.WriteableBitmap> is locked.
4. Call the <xref:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect%2A> method to indicate areas that have changed.
5. Call the <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> method to release the back buffer and allow presentation to the screen.
When updates are sent to the rendering thread, the rendering thread copies the changed rectangles from the back buffer to the front buffer. The rendering system controls this exchange to avoid deadlocks and redraw artifacts, such as "tearing".
## Examples
The following example demonstrates how a <xref:System.Windows.Media.Imaging.WriteableBitmap> can be used as the source of an <xref:System.Windows.Controls.Image> to draw pixels when the mouse moves.
:::code language="csharp" source="~/snippets/csharp/System.Windows.Media.Imaging/WriteableBitmap/Overview/Program.cs" id="Snippetwriteablebitmapfullpage":::
]]></format>
</remarks>
<altmember cref="T:System.Windows.Media.Imaging.BitmapSource" />
</Docs>
<Members>
<MemberGroup MemberName=".ctor">
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Docs>
<summary>Initializes a new instance of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" /> class.</summary>
</Docs>
</MemberGroup>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public WriteableBitmap (System.Windows.Media.Imaging.BitmapSource source);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(class System.Windows.Media.Imaging.BitmapSource source) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.#ctor(System.Windows.Media.Imaging.BitmapSource)" />
<MemberSignature Language="VB.NET" Value="Public Sub New (source As BitmapSource)" />
<MemberSignature Language="F#" Value="new System.Windows.Media.Imaging.WriteableBitmap : System.Windows.Media.Imaging.BitmapSource -> System.Windows.Media.Imaging.WriteableBitmap" Usage="new System.Windows.Media.Imaging.WriteableBitmap source" />
<MemberSignature Language="C++ CLI" Value="public:
 WriteableBitmap(System::Windows::Media::Imaging::BitmapSource ^ source);" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<Parameters>
<Parameter Name="source" Type="System.Windows.Media.Imaging.BitmapSource" />
</Parameters>
<Docs>
<param name="source">The <see cref="T:System.Windows.Media.Imaging.BitmapSource" /> to use for initialization.</param>
<summary>Initializes a new instance of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" /> class using the given <see cref="T:System.Windows.Media.Imaging.BitmapSource" />.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The <xref:System.Windows.Media.Imaging.WriteableBitmap.%23ctor%28System.Int32%2CSystem.Int32%2CSystem.Double%2CSystem.Double%2CSystem.Windows.Media.PixelFormat%2CSystem.Windows.Media.Imaging.BitmapPalette%29> constructor is preferred over using this constructor.
If `source` does not use a natively supported bitmap format, format conversions are applied for each frame update, which reduces performance.
]]></format>
</remarks>
</Docs>
</Member>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public WriteableBitmap (int pixelWidth, int pixelHeight, double dpiX, double dpiY, System.Windows.Media.PixelFormat pixelFormat, System.Windows.Media.Imaging.BitmapPalette palette);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(int32 pixelWidth, int32 pixelHeight, float64 dpiX, float64 dpiY, valuetype System.Windows.Media.PixelFormat pixelFormat, class System.Windows.Media.Imaging.BitmapPalette palette) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.#ctor(System.Int32,System.Int32,System.Double,System.Double,System.Windows.Media.PixelFormat,System.Windows.Media.Imaging.BitmapPalette)" />
<MemberSignature Language="VB.NET" Value="Public Sub New (pixelWidth As Integer, pixelHeight As Integer, dpiX As Double, dpiY As Double, pixelFormat As PixelFormat, palette As BitmapPalette)" />
<MemberSignature Language="F#" Value="new System.Windows.Media.Imaging.WriteableBitmap : int * int * double * double * System.Windows.Media.PixelFormat * System.Windows.Media.Imaging.BitmapPalette -> System.Windows.Media.Imaging.WriteableBitmap" Usage="new System.Windows.Media.Imaging.WriteableBitmap (pixelWidth, pixelHeight, dpiX, dpiY, pixelFormat, palette)" />
<MemberSignature Language="C++ CLI" Value="public:
 WriteableBitmap(int pixelWidth, int pixelHeight, double dpiX, double dpiY, System::Windows::Media::PixelFormat pixelFormat, System::Windows::Media::Imaging::BitmapPalette ^ palette);" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<Parameters>
<Parameter Name="pixelWidth" Type="System.Int32" />
<Parameter Name="pixelHeight" Type="System.Int32" />
<Parameter Name="dpiX" Type="System.Double" />
<Parameter Name="dpiY" Type="System.Double" />
<Parameter Name="pixelFormat" Type="System.Windows.Media.PixelFormat" />
<Parameter Name="palette" Type="System.Windows.Media.Imaging.BitmapPalette" />
</Parameters>
<Docs>
<param name="pixelWidth">The desired width of the bitmap.</param>
<param name="pixelHeight">The desired height of the bitmap.</param>
<param name="dpiX">The horizontal dots per inch (dpi) of the bitmap.</param>
<param name="dpiY">The vertical dots per inch (dpi) of the bitmap.</param>
<param name="pixelFormat">The <see cref="T:System.Windows.Media.PixelFormat" /> of the bitmap.</param>
<param name="palette">The <see cref="T:System.Windows.Media.Imaging.BitmapPalette" /> of the bitmap.</param>
<summary>Initializes a new instance of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" /> class with the specified parameters.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The preferred values for `pixelFormat` are <xref:System.Windows.Media.PixelFormats.Bgr32%2A> and <xref:System.Windows.Media.PixelFormats.Pbgra32%2A>. These formats are natively supported and do not require a format conversion. Other `pixelFormat` values require a format conversion for each frame update, which reduces performance.
]]></format>
</remarks>
</Docs>
</Member>
<Member MemberName="AddDirtyRect">
<MemberSignature Language="C#" Value="public void AddDirtyRect (System.Windows.Int32Rect dirtyRect);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void AddDirtyRect(valuetype System.Windows.Int32Rect dirtyRect) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect(System.Windows.Int32Rect)" />
<MemberSignature Language="VB.NET" Value="Public Sub AddDirtyRect (dirtyRect As Int32Rect)" />
<MemberSignature Language="F#" Value="member this.AddDirtyRect : System.Windows.Int32Rect -> unit" Usage="writeableBitmap.AddDirtyRect dirtyRect" />
<MemberSignature Language="C++ CLI" Value="public:
 void AddDirtyRect(System::Windows::Int32Rect dirtyRect);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="dirtyRect" Type="System.Windows.Int32Rect" />
</Parameters>
<Docs>
<param name="dirtyRect">An <see cref="T:System.Windows.Int32Rect" /> representing the area that changed. Dimensions are in pixels.</param>
<summary>Specifies the area of the bitmap that changed.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
Call the <xref:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect%2A> method to indicate changes your code has made to the back buffer.
When you call this method multiple times, the changed areas are accumulated in a sufficient, but not necessarily minimal, representation. For efficiency, only the areas that are marked as dirty are guaranteed to be copied forward to the front buffer. However, any portion of the bitmap may be copied forward, so you must ensure that the entire back buffer is always valid.
Call the <xref:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect%2A> method only between calls to the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> and <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> methods, as described in the <xref:System.Windows.Media.Imaging.WriteableBitmap> class remarks.
## Examples
The following code example shows how to specify the area of the back buffer that changed by using the <xref:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect%2A> method.
:::code language="csharp" source="~/snippets/csharp/System.Windows.Media.Imaging/WriteableBitmap/Overview/Program.cs" id="Snippet2":::
]]></format>
</remarks>
<exception cref="T:System.InvalidOperationException">The bitmap has not been locked by a call to the <see cref="M:System.Windows.Media.Imaging.WriteableBitmap.Lock" /> or <see cref="M:System.Windows.Media.Imaging.WriteableBitmap.TryLock(System.Windows.Duration)" /> methods.</exception>
<exception cref="T:System.ArgumentOutOfRangeException">
<paramref name="dirtyRect" /> falls outside the bounds of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" />.</exception>
</Docs>
</Member>
<Member MemberName="BackBuffer">
<MemberSignature Language="C#" Value="public IntPtr BackBuffer { get; }" />
<MemberSignature Language="ILAsm" Value=".property instance native int BackBuffer" />
<MemberSignature Language="DocId" Value="P:System.Windows.Media.Imaging.WriteableBitmap.BackBuffer" />
<MemberSignature Language="VB.NET" Value="Public ReadOnly Property BackBuffer As IntPtr" />
<MemberSignature Language="F#" Value="member this.BackBuffer : nativeint" Usage="System.Windows.Media.Imaging.WriteableBitmap.BackBuffer" />
<MemberSignature Language="C++ CLI" Value="public:
 property IntPtr BackBuffer { IntPtr get(); };" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<get: System.Security.SecurityCritical>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[set: System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<set: System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.IntPtr</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets a pointer to the back buffer.</summary>
<value>An <see cref="T:System.IntPtr" /> that points to the base address of the back buffer.</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The back buffer contains the bitmap contents in the pixel format requested by the user.
Update the back buffer only between calls to the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> and <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> methods. If you do not follow the Lock/Unlock workflow described in the <xref:System.Windows.Media.Imaging.WriteableBitmap> class remarks, undefined behaviors, such as tearing, can occur.
The address of the back buffer does not change.
## Thread Safety
You can pass the <xref:System.Windows.Media.Imaging.WriteableBitmap.BackBuffer%2A> pointer to external components and other threads for processing, but if you do, you must provide you own thread coordination. In particular, you must ensure that the UI thread specifies changed areas by calling the <xref:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect%2A> method, and that the UI thread unlocks the buffer by calling the <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> method.
]]></format>
</remarks>
</Docs>
</Member>
<Member MemberName="BackBufferStride">
<MemberSignature Language="C#" Value="public int BackBufferStride { get; }" />
<MemberSignature Language="ILAsm" Value=".property instance int32 BackBufferStride" />
<MemberSignature Language="DocId" Value="P:System.Windows.Media.Imaging.WriteableBitmap.BackBufferStride" />
<MemberSignature Language="VB.NET" Value="Public ReadOnly Property BackBufferStride As Integer" />
<MemberSignature Language="F#" Value="member this.BackBufferStride : int" Usage="System.Windows.Media.Imaging.WriteableBitmap.BackBufferStride" />
<MemberSignature Language="C++ CLI" Value="public:
 property int BackBufferStride { int get(); };" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Int32</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets a value indicating the number of bytes in a single row of pixel data.</summary>
<value>An integer indicating the number of bytes in a single row of pixel data.</value>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="Clone">
<MemberSignature Language="C#" Value="public System.Windows.Media.Imaging.WriteableBitmap Clone ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance class System.Windows.Media.Imaging.WriteableBitmap Clone() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.Clone" />
<MemberSignature Language="VB.NET" Value="Public Function Clone () As WriteableBitmap" />
<MemberSignature Language="F#" Value="override this.Clone : unit -> System.Windows.Media.Imaging.WriteableBitmap" Usage="writeableBitmap.Clone " />
<MemberSignature Language="C++ CLI" Value="public:
 System::Windows::Media::Imaging::WriteableBitmap ^ Clone();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Media.Imaging.WriteableBitmap</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>Creates a modifiable clone of this <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" />, making deep copies of this object's values. When copying dependency properties, this method copies resource references and data bindings (but they might no longer resolve) but not animations or their current values.</summary>
<returns>A modifiable clone of the current object. The cloned object's <see cref="P:System.Windows.Freezable.IsFrozen" /> property will be <see langword="false" /> even if the source's <see cref="P:System.Windows.Freezable.IsFrozen" /> property was <see langword="true" />.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
This method is used to produce modifiable copies of frozen <xref:System.Windows.Freezable> objects (or any <xref:System.Windows.Freezable> object). For convenience, this method shadows the inherited version with a strongly typed implementation.
For more information, see <xref:System.Windows.Freezable.Clone%2A?displayProperty=nameWithType>.
]]></format>
</remarks>
</Docs>
</Member>
<Member MemberName="CloneCore">
<MemberSignature Language="C#" Value="protected override void CloneCore (System.Windows.Freezable sourceFreezable);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig virtual instance void CloneCore(class System.Windows.Freezable sourceFreezable) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.CloneCore(System.Windows.Freezable)" />
<MemberSignature Language="VB.NET" Value="Protected Overrides Sub CloneCore (sourceFreezable As Freezable)" />
<MemberSignature Language="F#" Value="override this.CloneCore : System.Windows.Freezable -> unit" Usage="writeableBitmap.CloneCore sourceFreezable" />
<MemberSignature Language="C++ CLI" Value="protected:
 override void CloneCore(System::Windows::Freezable ^ sourceFreezable);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityTreatAsSafe]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityTreatAsSafe>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceFreezable" Type="System.Windows.Freezable" />
</Parameters>
<Docs>
<param name="sourceFreezable">To be added.</param>
<summary>To be added.</summary>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="CloneCurrentValue">
<MemberSignature Language="C#" Value="public System.Windows.Media.Imaging.WriteableBitmap CloneCurrentValue ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance class System.Windows.Media.Imaging.WriteableBitmap CloneCurrentValue() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.CloneCurrentValue" />
<MemberSignature Language="VB.NET" Value="Public Function CloneCurrentValue () As WriteableBitmap" />
<MemberSignature Language="F#" Value="override this.CloneCurrentValue : unit -> System.Windows.Media.Imaging.WriteableBitmap" Usage="writeableBitmap.CloneCurrentValue " />
<MemberSignature Language="C++ CLI" Value="public:
 System::Windows::Media::Imaging::WriteableBitmap ^ CloneCurrentValue();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Media.Imaging.WriteableBitmap</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>Creates a modifiable clone of this <see cref="T:System.Windows.Media.Animation.ByteAnimationUsingKeyFrames" /> object, making deep copies of this object's current values. Resource references, data bindings, and animations are not copied, but their current values are.</summary>
<returns>A modifiable clone of the current object. The cloned object's <see cref="P:System.Windows.Freezable.IsFrozen" /> property will be <see langword="false" /> even if the source's <see cref="P:System.Windows.Freezable.IsFrozen" /> property was <see langword="true" />.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
This method is used to produce modifiable copies of frozen <xref:System.Windows.Freezable> objects (or any <xref:System.Windows.Freezable> object). For convenience, this method shadows the inherited version with a strongly typed implementation.
For more information, see <xref:System.Windows.Freezable.CloneCurrentValue%2A?displayProperty=nameWithType>.
]]></format>
</remarks>
</Docs>
</Member>
<Member MemberName="CloneCurrentValueCore">
<MemberSignature Language="C#" Value="protected override void CloneCurrentValueCore (System.Windows.Freezable sourceFreezable);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig virtual instance void CloneCurrentValueCore(class System.Windows.Freezable sourceFreezable) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.CloneCurrentValueCore(System.Windows.Freezable)" />
<MemberSignature Language="VB.NET" Value="Protected Overrides Sub CloneCurrentValueCore (sourceFreezable As Freezable)" />
<MemberSignature Language="F#" Value="override this.CloneCurrentValueCore : System.Windows.Freezable -> unit" Usage="writeableBitmap.CloneCurrentValueCore sourceFreezable" />
<MemberSignature Language="C++ CLI" Value="protected:
 override void CloneCurrentValueCore(System::Windows::Freezable ^ sourceFreezable);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityTreatAsSafe]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityTreatAsSafe>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceFreezable" Type="System.Windows.Freezable" />
</Parameters>
<Docs>
<param name="sourceFreezable">To be added.</param>
<summary>To be added.</summary>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="CreateInstanceCore">
<MemberSignature Language="C#" Value="protected override System.Windows.Freezable CreateInstanceCore ();" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig virtual instance class System.Windows.Freezable CreateInstanceCore() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.CreateInstanceCore" />
<MemberSignature Language="VB.NET" Value="Protected Overrides Function CreateInstanceCore () As Freezable" />
<MemberSignature Language="F#" Value="override this.CreateInstanceCore : unit -> System.Windows.Freezable" Usage="writeableBitmap.CreateInstanceCore " />
<MemberSignature Language="C++ CLI" Value="protected:
 override System::Windows::Freezable ^ CreateInstanceCore();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Windows.Freezable</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>To be added.</summary>
<returns>To be added.</returns>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="FreezeCore">
<MemberSignature Language="C#" Value="protected override bool FreezeCore (bool isChecking);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig virtual instance bool FreezeCore(bool isChecking) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.FreezeCore(System.Boolean)" />
<MemberSignature Language="VB.NET" Value="Protected Overrides Function FreezeCore (isChecking As Boolean) As Boolean" />
<MemberSignature Language="F#" Value="override this.FreezeCore : bool -> bool" Usage="writeableBitmap.FreezeCore isChecking" />
<MemberSignature Language="C++ CLI" Value="protected:
 override bool FreezeCore(bool isChecking);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityTreatAsSafe]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityTreatAsSafe>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Boolean</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="isChecking" Type="System.Boolean" />
</Parameters>
<Docs>
<param name="isChecking">To be added.</param>
<summary>To be added.</summary>
<returns>To be added.</returns>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="GetAsFrozenCore">
<MemberSignature Language="C#" Value="protected override void GetAsFrozenCore (System.Windows.Freezable sourceFreezable);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig virtual instance void GetAsFrozenCore(class System.Windows.Freezable sourceFreezable) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.GetAsFrozenCore(System.Windows.Freezable)" />
<MemberSignature Language="VB.NET" Value="Protected Overrides Sub GetAsFrozenCore (sourceFreezable As Freezable)" />
<MemberSignature Language="F#" Value="override this.GetAsFrozenCore : System.Windows.Freezable -> unit" Usage="writeableBitmap.GetAsFrozenCore sourceFreezable" />
<MemberSignature Language="C++ CLI" Value="protected:
 override void GetAsFrozenCore(System::Windows::Freezable ^ sourceFreezable);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityTreatAsSafe]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityTreatAsSafe>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceFreezable" Type="System.Windows.Freezable" />
</Parameters>
<Docs>
<param name="sourceFreezable">To be added.</param>
<summary>To be added.</summary>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="GetCurrentValueAsFrozenCore">
<MemberSignature Language="C#" Value="protected override void GetCurrentValueAsFrozenCore (System.Windows.Freezable sourceFreezable);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig virtual instance void GetCurrentValueAsFrozenCore(class System.Windows.Freezable sourceFreezable) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.GetCurrentValueAsFrozenCore(System.Windows.Freezable)" />
<MemberSignature Language="VB.NET" Value="Protected Overrides Sub GetCurrentValueAsFrozenCore (sourceFreezable As Freezable)" />
<MemberSignature Language="F#" Value="override this.GetCurrentValueAsFrozenCore : System.Windows.Freezable -> unit" Usage="writeableBitmap.GetCurrentValueAsFrozenCore sourceFreezable" />
<MemberSignature Language="C++ CLI" Value="protected:
 override void GetCurrentValueAsFrozenCore(System::Windows::Freezable ^ sourceFreezable);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityTreatAsSafe]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityTreatAsSafe>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceFreezable" Type="System.Windows.Freezable" />
</Parameters>
<Docs>
<param name="sourceFreezable">To be added.</param>
<summary>To be added.</summary>
<remarks>To be added.</remarks>
</Docs>
</Member>
<Member MemberName="Lock">
<MemberSignature Language="C#" Value="public void Lock ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void Lock() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.Lock" />
<MemberSignature Language="VB.NET" Value="Public Sub Lock ()" />
<MemberSignature Language="F#" Value="member this.Lock : unit -> unit" Usage="writeableBitmap.Lock " />
<MemberSignature Language="C++ CLI" Value="public:
 void Lock();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>Reserves the back buffer for updates.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> method increments the lock count. When a <xref:System.Windows.Media.Imaging.WriteableBitmap> is locked, the rendering system does not send updates until the <xref:System.Windows.Media.Imaging.WriteableBitmap> is fully unlocked by calls to the <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> method.
You can use the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> method to support multi-threaded implementations. In these scenarios, the UI thread locks the bitmap and exposes the back buffer to other threads. When the worker thread has finished a frame, the UI thread adds changed rectangles and unlocks the buffer.
The UI thread can block when the render thread acquires a lock on the back buffer to copy it forward to the front buffer. If the latency from this block is too long, use the <xref:System.Windows.Media.Imaging.WriteableBitmap.TryLock%2A> method to wait for a short time and then unblock the UI thread to perform other tasks while the back buffer is locked.
## Examples
The following code example shows how to reserve the back buffer by using the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> method.
:::code language="csharp" source="~/snippets/csharp/System.Windows.Media.Imaging/WriteableBitmap/Overview/Program.cs" id="Snippet2":::
]]></format>
</remarks>
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.TryLock(System.Windows.Duration)" />
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.Unlock" />
</Docs>
</Member>
<Member MemberName="TryLock">
<MemberSignature Language="C#" Value="public bool TryLock (System.Windows.Duration timeout);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance bool TryLock(valuetype System.Windows.Duration timeout) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.TryLock(System.Windows.Duration)" />
<MemberSignature Language="VB.NET" Value="Public Function TryLock (timeout As Duration) As Boolean" />
<MemberSignature Language="F#" Value="member this.TryLock : System.Windows.Duration -> bool" Usage="writeableBitmap.TryLock timeout" />
<MemberSignature Language="C++ CLI" Value="public:
 bool TryLock(System::Windows::Duration timeout);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Boolean</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="timeout" Type="System.Windows.Duration" />
</Parameters>
<Docs>
<param name="timeout">A <see cref="T:System.Windows.Duration" /> that represents the length of time to wait. A value of 0 returns immediately. A value of <see cref="P:System.Windows.Duration.Forever" /> blocks indefinitely.</param>
<summary>Attempts to lock the bitmap, waiting for no longer than the specified length of time.</summary>
<returns>
<see langword="true" /> if the lock was acquired; otherwise, <see langword="false" />.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
When a lock is acquired, the behavior of the <xref:System.Windows.Media.Imaging.WriteableBitmap.TryLock%2A> method is the same as the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> method.
]]></format>
</remarks>
<exception cref="T:System.ArgumentOutOfRangeException">
<paramref name="timeout" /> is set to <see cref="P:System.Windows.Duration.Automatic" />.</exception>
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.Lock" />
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.Unlock" />
</Docs>
</Member>
<Member MemberName="Unlock">
<MemberSignature Language="C#" Value="public void Unlock ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void Unlock() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.Unlock" />
<MemberSignature Language="VB.NET" Value="Public Sub Unlock ()" />
<MemberSignature Language="F#" Value="member this.Unlock : unit -> unit" Usage="writeableBitmap.Unlock " />
<MemberSignature Language="C++ CLI" Value="public:
 void Unlock();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>Releases the back buffer to make it available for display.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> method decrements the lock count. When the lock count reaches 0, a render pass is requested if the <xref:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect%2A> method has been called.
## Examples
The following code example shows how to release the back buffer by using the <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> method.
:::code language="csharp" source="~/snippets/csharp/System.Windows.Media.Imaging/WriteableBitmap/Overview/Program.cs" id="Snippet2":::
]]></format>
</remarks>
<exception cref="T:System.InvalidOperationException">The bitmap has not been locked by a call to the <see cref="M:System.Windows.Media.Imaging.WriteableBitmap.Lock" /> or <see cref="M:System.Windows.Media.Imaging.WriteableBitmap.TryLock(System.Windows.Duration)" /> methods.</exception>
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.Lock" />
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.AddDirtyRect(System.Windows.Int32Rect)" />
</Docs>
</Member>
<MemberGroup MemberName="WritePixels">
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Docs>
<summary>Updates the pixels of the writeable bitmap.</summary>
</Docs>
</MemberGroup>
<Member MemberName="WritePixels">
<MemberSignature Language="C#" Value="public void WritePixels (System.Windows.Int32Rect sourceRect, Array pixels, int stride, int offset);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void WritePixels(valuetype System.Windows.Int32Rect sourceRect, class System.Array pixels, int32 stride, int32 offset) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.WritePixels(System.Windows.Int32Rect,System.Array,System.Int32,System.Int32)" />
<MemberSignature Language="VB.NET" Value="Public Sub WritePixels (sourceRect As Int32Rect, pixels As Array, stride As Integer, offset As Integer)" />
<MemberSignature Language="F#" Value="member this.WritePixels : System.Windows.Int32Rect * Array * int * int -> unit" Usage="writeableBitmap.WritePixels (sourceRect, pixels, stride, offset)" />
<MemberSignature Language="C++ CLI" Value="public:
 void WritePixels(System::Windows::Int32Rect sourceRect, Array ^ pixels, int stride, int offset);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceRect" Type="System.Windows.Int32Rect" />
<Parameter Name="pixels" Type="System.Array" />
<Parameter Name="stride" Type="System.Int32" />
<Parameter Name="offset" Type="System.Int32" />
</Parameters>
<Docs>
<param name="sourceRect">The rectangle of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" /> to update.</param>
<param name="pixels">The pixel array used to update the bitmap.</param>
<param name="stride">The stride of the update region in <paramref name="pixels" />.</param>
<param name="offset">The input buffer offset.</param>
<summary>Updates the pixels in the specified region of the bitmap.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%28System.Windows.Int32Rect%2CSystem.Array%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%29> and <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%28System.Windows.Int32Rect%2CSystem.IntPtr%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%29> overloads are preferred over using this method.
> [!NOTE]
> In partial trust, use the <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%28System.Windows.Int32Rect%2CSystem.Array%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%29> overload.
## Examples
The following code example shows how to update a pixel in the back buffer by using the <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%2A> method.
:::code language="csharp" source="~/snippets/csharp/System.Windows.Media.Imaging/WriteableBitmap/Overview/Program.cs" id="Snippet3":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentOutOfRangeException">One or more of the following conditions is true.
<paramref name="sourceRect" /> falls outside the bounds of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" />.
<paramref name="stride" /> < 1
<paramref name="offset" /> < 0</exception>
<exception cref="T:System.ArgumentNullException">
<paramref name="pixels" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">
<paramref name="pixels" /> has a rank other than 1 or 2, or its length is less than or equal to 0.</exception>
</Docs>
</Member>
<Member MemberName="WritePixels">
<MemberSignature Language="C#" Value="public void WritePixels (System.Windows.Int32Rect sourceRect, IntPtr buffer, int bufferSize, int stride);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void WritePixels(valuetype System.Windows.Int32Rect sourceRect, native int buffer, int32 bufferSize, int32 stride) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.WritePixels(System.Windows.Int32Rect,System.IntPtr,System.Int32,System.Int32)" />
<MemberSignature Language="VB.NET" Value="Public Sub WritePixels (sourceRect As Int32Rect, buffer As IntPtr, bufferSize As Integer, stride As Integer)" />
<MemberSignature Language="F#" Value="member this.WritePixels : System.Windows.Int32Rect * nativeint * int * int -> unit" Usage="writeableBitmap.WritePixels (sourceRect, buffer, bufferSize, stride)" />
<MemberSignature Language="C++ CLI" Value="public:
 void WritePixels(System::Windows::Int32Rect sourceRect, IntPtr buffer, int bufferSize, int stride);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceRect" Type="System.Windows.Int32Rect" />
<Parameter Name="buffer" Type="System.IntPtr" />
<Parameter Name="bufferSize" Type="System.Int32" />
<Parameter Name="stride" Type="System.Int32" />
</Parameters>
<Docs>
<param name="sourceRect">The rectangle of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" /> to update.</param>
<param name="buffer">The input buffer used to update the bitmap.</param>
<param name="bufferSize">The size of the input buffer.</param>
<param name="stride">The stride of the update region in <paramref name="buffer" />.</param>
<summary>Updates the pixels in the specified region of the bitmap.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%28System.Windows.Int32Rect%2CSystem.Array%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%29> and <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%28System.Windows.Int32Rect%2CSystem.IntPtr%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%29> overloads are preferred over using this method.
> [!NOTE]
> In partial trust, use the <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%28System.Windows.Int32Rect%2CSystem.Array%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%29> overload.
]]></format>
</remarks>
<exception cref="T:System.ArgumentOutOfRangeException">One or more of the following conditions is true.
<paramref name="sourceRect" /> falls outside the bounds of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" />.
<paramref name="bufferSize" /> < 1
<paramref name="stride" /> < 1</exception>
<exception cref="T:System.ArgumentNullException">
<paramref name="buffer" /> is <see langword="null" />.</exception>
</Docs>
</Member>
<Member MemberName="WritePixels">
<MemberSignature Language="C#" Value="public void WritePixels (System.Windows.Int32Rect sourceRect, Array sourceBuffer, int sourceBufferStride, int destinationX, int destinationY);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void WritePixels(valuetype System.Windows.Int32Rect sourceRect, class System.Array sourceBuffer, int32 sourceBufferStride, int32 destinationX, int32 destinationY) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.WritePixels(System.Windows.Int32Rect,System.Array,System.Int32,System.Int32,System.Int32)" />
<MemberSignature Language="VB.NET" Value="Public Sub WritePixels (sourceRect As Int32Rect, sourceBuffer As Array, sourceBufferStride As Integer, destinationX As Integer, destinationY As Integer)" />
<MemberSignature Language="F#" Value="member this.WritePixels : System.Windows.Int32Rect * Array * int * int * int -> unit" Usage="writeableBitmap.WritePixels (sourceRect, sourceBuffer, sourceBufferStride, destinationX, destinationY)" />
<MemberSignature Language="C++ CLI" Value="public:
 void WritePixels(System::Windows::Int32Rect sourceRect, Array ^ sourceBuffer, int sourceBufferStride, int destinationX, int destinationY);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceRect" Type="System.Windows.Int32Rect" />
<Parameter Name="sourceBuffer" Type="System.Array" />
<Parameter Name="sourceBufferStride" Type="System.Int32" />
<Parameter Name="destinationX" Type="System.Int32" />
<Parameter Name="destinationY" Type="System.Int32" />
</Parameters>
<Docs>
<param name="sourceRect">The rectangle in <paramref name="sourceBuffer" /> to copy.</param>
<param name="sourceBuffer">The input buffer used to update the bitmap.</param>
<param name="sourceBufferStride">The stride of the input buffer, in bytes.</param>
<param name="destinationX">The destination x-coordinate of the left-most pixel in the back buffer.</param>
<param name="destinationY">The destination y-coordinate of the top-most pixel in the back buffer.</param>
<summary>Updates the pixels in the specified region of the bitmap.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
Call the <xref:System.Windows.Media.Imaging.WriteableBitmap.WritePixels%2A> method to update the <xref:System.Windows.Media.Imaging.WriteableBitmap> automatically with the contents of `sourceBuffer`. Calling this method is the equivalent of using the <xref:System.Windows.Media.Imaging.WriteableBitmap.Lock%2A> and <xref:System.Windows.Media.Imaging.WriteableBitmap.Unlock%2A> workflow described in the <xref:System.Windows.Media.Imaging.WriteableBitmap> class remarks.
> [!NOTE]
> Use this overload in partial trust.
]]></format>
</remarks>
<exception cref="T:System.ArgumentOutOfRangeException">One or more of the following conditions is true.
<paramref name="sourceRect" /> falls outside the bounds of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" />.
<paramref name="destinationX" /> or <paramref name="destinationY" /> is outside the bounds of the <see cref="T:System.Windows.Media.Imaging.WriteableBitmap" />.
<paramref name="sourceBufferStride" /> < 1</exception>
<exception cref="T:System.ArgumentNullException">
<paramref name="sourceBuffer" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">
<paramref name="sourceBuffer" /> has a rank other than 1 or 2, or its length is less than or equal to 0.</exception>
<altmember cref="M:System.Windows.Media.Imaging.WriteableBitmap.WritePixels(System.Windows.Int32Rect,System.IntPtr,System.Int32,System.Int32,System.Int32,System.Int32)" />
</Docs>
</Member>
<Member MemberName="WritePixels">
<MemberSignature Language="C#" Value="public void WritePixels (System.Windows.Int32Rect sourceRect, IntPtr sourceBuffer, int sourceBufferSize, int sourceBufferStride, int destinationX, int destinationY);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void WritePixels(valuetype System.Windows.Int32Rect sourceRect, native int sourceBuffer, int32 sourceBufferSize, int32 sourceBufferStride, int32 destinationX, int32 destinationY) cil managed" />
<MemberSignature Language="DocId" Value="M:System.Windows.Media.Imaging.WriteableBitmap.WritePixels(System.Windows.Int32Rect,System.IntPtr,System.Int32,System.Int32,System.Int32,System.Int32)" />
<MemberSignature Language="VB.NET" Value="Public Sub WritePixels (sourceRect As Int32Rect, sourceBuffer As IntPtr, sourceBufferSize As Integer, sourceBufferStride As Integer, destinationX As Integer, destinationY As Integer)" />
<MemberSignature Language="F#" Value="member this.WritePixels : System.Windows.Int32Rect * nativeint * int * int * int * int -> unit" Usage="writeableBitmap.WritePixels (sourceRect, sourceBuffer, sourceBufferSize, sourceBufferStride, destinationX, destinationY)" />
<MemberSignature Language="C++ CLI" Value="public:
 void WritePixels(System::Windows::Int32Rect sourceRect, IntPtr sourceBuffer, int sourceBufferSize, int sourceBufferStride, int destinationX, int destinationY);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>PresentationCore</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>5.0.0.0</AssemblyVersion>
<AssemblyVersion>6.0.0.0</AssemblyVersion>
<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
<AttributeName Language="F#">[<System.Security.SecurityCritical>]</AttributeName>
</Attribute>
</Attributes>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="sourceRect" Type="System.Windows.Int32Rect" />
<Parameter Name="sourceBuffer" Type="System.IntPtr" />
<Parameter Name="sourceBufferSize" Type="System.Int32" />
<Parameter Name="sourceBufferStride" Type="System.Int32" />
<Parameter Name="destinationX" Type="System.Int32" />
<Parameter Name="destinationY" Type="System.Int32" />
</Parameters>
<Docs>
<param name="sourceRect">The rectangle in <paramref name="sourceBuffer" /> to copy.</param>
<param name="sourceBuffer">The input buffer used to update the bitmap.</param>
<param name="sourceBufferSize">The size of the input buffer.</param>
<param name="sourceBufferStride">The stride of the input buffer, in bytes.</param>
<param name="destinationX">The destination x-coordinate of the left-most pixel in the back buffer.</param>
<param name="destinationY">The destination y-coordinate of the top-most pixel in the back buffer.</param>
<summary>Updates the pixels in the specified region of the bitmap.</summary>
<remarks>
<format type="text/markdown"><![CDATA[