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Package.xml
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Package.xml
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<Type Name="Package" FullName="System.IO.Packaging.Package">
<TypeSignature Language="C#" Value="public abstract class Package : IDisposable" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi abstract beforefieldinit Package extends System.Object implements class System.IDisposable" />
<TypeSignature Language="DocId" Value="T:System.IO.Packaging.Package" />
<TypeSignature Language="VB.NET" Value="Public MustInherit Class Package
Implements IDisposable" />
<TypeSignature Language="F#" Value="type Package = class
 interface IDisposable" />
<TypeSignature Language="C++ CLI" Value="public ref class Package abstract : IDisposable" />
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.3.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<TypeForwardingChain>
<TypeForwarding From="System.IO.Packaging" FromVersion="9.0.0.0" To="WindowsBase" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
<TypeForwarding From="WindowsBase" FromVersion="4.0.0.0" To="System.IO.Packaging" ToVersion="4.0.4.0" FrameworkAlternate="windowsdesktop-3.0" />
<TypeForwarding From="WindowsBase" FromVersion="4.0.0.0" To="System.IO.Packaging" ToVersion="4.0.5.0" FrameworkAlternate="windowsdesktop-3.1" />
<TypeForwarding From="WindowsBase" FromVersion="5.0.0.0" To="System.IO.Packaging" ToVersion="5.0.0.0" FrameworkAlternate="windowsdesktop-5.0" />
<TypeForwarding From="WindowsBase" FromVersion="6.0.0.0" To="System.IO.Packaging" ToVersion="6.0.0.0" FrameworkAlternate="windowsdesktop-6.0" />
<TypeForwarding From="WindowsBase" FromVersion="7.0.0.0" To="System.IO.Packaging" ToVersion="7.0.0.0" FrameworkAlternate="windowsdesktop-7.0" />
<TypeForwarding From="WindowsBase" FromVersion="8.0.0.0" To="System.IO.Packaging" ToVersion="8.0.0.0" FrameworkAlternate="windowsdesktop-8.0" />
<TypeForwarding From="WindowsBase" FromVersion="9.0.0.0" To="System.IO.Packaging" ToVersion="9.0.0.0" FrameworkAlternate="windowsdesktop-9.0" />
</TypeForwardingChain>
<Base>
<BaseTypeName>System.Object</BaseTypeName>
</Base>
<Interfaces>
<Interface FrameworkAlternate="windowsdesktop-9.0">
<InterfaceName>System.IDisposable</InterfaceName>
</Interface>
</Interfaces>
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.Nullable(0)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.NullableContext(1)>]</AttributeName>
</Attribute>
</Attributes>
<Docs>
<summary>Represents a container that can store multiple data objects.</summary>
<remarks>
<format type="text/markdown"><.
.NET Framework uses packages to store content, resources, and relationships for pages and documents using a standard ZIP file by default. As with any ZIP file, your application can use the <xref:System.IO.Packaging> classes to store and optionally protect any type or number of data files in a single efficient-to-access container.
For more information, see the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example shows the basic steps for creating a <xref:System.IO.Packaging.Package>. In this example, a package is created to contain a document together with a graphic image that is displayed as part of the document. (This is similar to the case in which an HTML file has an \<IMG> tag that references an external image file.) Two <xref:System.IO.Packaging.PackageRelationship> elements are also included in the package. The first, a "package-level" relationship, defines the document part as the package's root element. A second, "part-level" relationship defines the association between the document part (the "source" of the part-level relationship) and its use of the image part (the "target" of the part-level relationship).
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepackage":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepackage":::
]]></format>
</remarks>
<altmember cref="T:System.IO.Packaging.PackagePart" />
<altmember cref="T:System.Windows.Xps.Packaging.XpsDocument" />
<related type="ExternalDocumentation" href="https://www.ecma-international.org/publications-and-standards/standards/ecma-376/">Open Packaging Conventions (OPC) Specification</related>
</Docs>
<Members>
<MemberGroup MemberName=".ctor">
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Docs>
<summary>Initializes a new instance of the <see cref="T:System.IO.Packaging.Package" /> class.</summary>
</Docs>
</MemberGroup>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="protected Package (System.IO.FileAccess openFileAccess);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig specialname rtspecialname instance void .ctor(valuetype System.IO.FileAccess openFileAccess) cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.#ctor(System.IO.FileAccess)" />
<MemberSignature Language="VB.NET" Value="Protected Sub New (openFileAccess As FileAccess)" />
<MemberSignature Language="F#" Value="new System.IO.Packaging.Package : System.IO.FileAccess -> System.IO.Packaging.Package" Usage="new System.IO.Packaging.Package openFileAccess" />
<MemberSignature Language="C++ CLI" Value="protected:
 Package(System::IO::FileAccess openFileAccess);" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Attributes>
<Attribute FrameworkAlternate="netframework-4.0">
<AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")>]</AttributeName>
</Attribute>
</Attributes>
<Parameters>
<Parameter Name="openFileAccess" Type="System.IO.FileAccess" />
</Parameters>
<Docs>
<param name="openFileAccess">The file IO permissions for the package.</param>
<summary>Initializes a new instance of the <see cref="T:System.IO.Packaging.Package" /> class that uses a given <see cref="T:System.IO.FileAccess" />.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
<xref:System.IO.Packaging.Package.%23ctor%2A> is a protected constructor of the <xref:System.IO.Packaging.Package> abstract base class. When called in a derived class, the <xref:System.IO.Packaging.Package.%23ctor%2A> constructor initializes a new instance of the derived class.
]]></format>
</remarks>
<exception cref="T:System.ArgumentOutOfRangeException">The value for <paramref name="openFileAccess" /> is not valid.</exception>
<altmember cref="P:System.IO.Packaging.Package.FileOpenAccess" />
</Docs>
</Member>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="protected Package (System.IO.FileAccess openFileAccess, bool streaming);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig specialname rtspecialname instance void .ctor(valuetype System.IO.FileAccess openFileAccess, bool streaming) cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.#ctor(System.IO.FileAccess,System.Boolean)" />
<MemberSignature Language="VB.NET" Value="Protected Sub New (openFileAccess As FileAccess, streaming As Boolean)" />
<MemberSignature Language="F#" Value="new System.IO.Packaging.Package : System.IO.FileAccess * bool -> System.IO.Packaging.Package" Usage="new System.IO.Packaging.Package (openFileAccess, streaming)" />
<MemberSignature Language="C++ CLI" Value="protected:
 Package(System::IO::FileAccess openFileAccess, bool streaming);" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
</AssemblyInfo>
<Parameters>
<Parameter Name="openFileAccess" Type="System.IO.FileAccess" Index="0" 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" />
<Parameter Name="streaming" Type="System.Boolean" Index="1" 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" />
</Parameters>
<Docs>
<param name="openFileAccess">The file IO permissions for the package.</param>
<param name="streaming">
<see langword="true" /> to open the package for streaming; otherwise, <see langword="false" />.</param>
<summary>Initializes a new instance of the <see cref="T:System.IO.Packaging.Package" /> class that uses a given <see cref="T:System.IO.FileAccess" /> and streaming option.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
<xref:System.IO.Packaging.Package.%23ctor%2A> is a protected constructor of the <xref:System.IO.Packaging.Package> abstract base abstract base class. When called in a derived class, the <xref:System.IO.Packaging.Package.%23ctor%2A> constructor initializes a new instance of the derived class.
]]></format>
</remarks>
<exception cref="T:System.ArgumentOutOfRangeException">The value for <paramref name="openFileAccess" /> is not valid.</exception>
<altmember cref="P:System.IO.Packaging.Package.FileOpenAccess" />
</Docs>
</Member>
<Member MemberName="Close">
<MemberSignature Language="C#" Value="public void Close ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void Close() cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.Close" />
<MemberSignature Language="VB.NET" Value="Public Sub Close ()" />
<MemberSignature Language="F#" Value="member this.Close : unit -> unit" Usage="package.Close " />
<MemberSignature Language="C++ CLI" Value="public:
 void Close();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>Saves and closes the package plus all underlying part streams.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
For the <xref:System.IO.Packaging.Package> class <xref:System.IO.Packaging.Package.Close%2A> and <xref:System.IO.Packaging.Package.Dispose%2A> perform the same operation - there is no reason to call <xref:System.IO.Packaging.Package.Dispose%2A> if you call <xref:System.IO.Packaging.Package.Close%2A>, or vice-versa.
<xref:System.IO.Packaging.Package.Close%2A> and <xref:System.IO.Packaging.Package.Dispose%2A> internally call <xref:System.IO.Packaging.Package.Flush%2A>.
> [!NOTE]
> The `using` statement (different from the `using` namespace directive) is the recommended way to <xref:System.IO.Packaging.Package.Close%2A> and <xref:System.IO.Packaging.Package.Dispose%2A> a package.
]]></format>
</remarks>
<altmember cref="T:System.IO.Packaging.PackagePart" />
<altmember cref="T:System.IO.Packaging.PackageRelationship" />
</Docs>
</Member>
<MemberGroup MemberName="CreatePart">
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Docs>
<summary>Creates a new package part.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
<xref:System.IO.Packaging.Package.CreatePart%2A> initializes an empty <xref:System.IO.Stream> for the new part. The <xref:System.IO.Packaging.PackagePart.GetStream%2A?displayProperty=nameWithType> method can be used to obtain a reference to the stream instance associated with the part.
For more information about package parts, see section 1.1 of the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example shows how to create a new <xref:System.IO.Packaging.PackagePart> and then store data into the part.
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepart":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepart":::
]]></format>
</remarks>
<block subset="none" type="overrides">
<para>
<see cref="Overload:System.IO.Packaging.Package.CreatePart" /> internally calls the derived class <see cref="M:System.IO.Packaging.Package.CreatePartCore(System.Uri,System.String,System.IO.Packaging.CompressionOption)" /> method to actually create the part based on the physical format implemented in the derived class.</para>
</block>
</Docs>
</MemberGroup>
<Member MemberName="CreatePart">
<MemberSignature Language="C#" Value="public System.IO.Packaging.PackagePart CreatePart (Uri partUri, string contentType);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance class System.IO.Packaging.PackagePart CreatePart(class System.Uri partUri, string contentType) cil managed" />
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<Parameter Name="partUri" Type="System.Uri" />
<Parameter Name="contentType" Type="System.String" />
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<param name="partUri">The uniform resource identifier (URI) of the new part.</param>
<param name="contentType">The content type of the data stream.</param>
<summary>Creates a new uncompressed part with a given URI and content type.</summary>
<returns>The new created part.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
<xref:System.IO.Packaging.Package.CreatePart%2A> initializes an empty <xref:System.IO.Stream> for the new part. The <xref:System.IO.Packaging.PackagePart.GetStream%2A?displayProperty=nameWithType> method can be used to obtain a reference to the stream instance associated with the part.
The part <xref:System.IO.Packaging.PackagePart.CompressionOption%2A> is <xref:System.IO.Packaging.CompressionOption.NotCompressed?displayProperty=nameWithType>.
For additional information about package parts, see section 1.1 in the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example shows how to create a new <xref:System.IO.Packaging.PackagePart> and then store data into the part.
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepart":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepart":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="partUri" /> or <paramref name="contentType" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">
<paramref name="partUri" /> is not a valid <see cref="T:System.IO.Packaging.PackagePart" /> URI.</exception>
<exception cref="T:System.InvalidOperationException">A part with the specified <paramref name="partUri" /> is already present in the package.</exception>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
<exception cref="T:System.IO.IOException">The package is read-only (a new part cannot be added).</exception>
<block subset="none" type="overrides">
<para>
<see cref="M:System.IO.Packaging.Package.CreatePart(System.Uri,System.String)" /> internally calls the derived class's <see cref="M:System.IO.Packaging.Package.CreatePartCore(System.Uri,System.String,System.IO.Packaging.CompressionOption)" /> method to actually create the part based on the physical format implemented in the derived class.</para>
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<altmember cref="M:System.IO.Packaging.PackUriHelper.CreatePartUri(System.Uri)" />
<altmember cref="M:System.IO.Packaging.PackUriHelper.GetPartUri(System.Uri)" />
<altmember cref="M:System.IO.Packaging.PackUriHelper.ResolvePartUri(System.Uri,System.Uri)" />
<altmember cref="T:System.IO.Packaging.ZipPackagePart" />
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<Parameter Name="partUri" Type="System.Uri" />
<Parameter Name="contentType" Type="System.String" />
<Parameter Name="compressionOption" Type="System.IO.Packaging.CompressionOption" />
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<param name="partUri">The URI of the new part.</param>
<param name="contentType">The content type of the data stream.</param>
<param name="compressionOption">The compression option for the data stream, <see cref="F:System.IO.Packaging.CompressionOption.NotCompressed" /> or <see cref="F:System.IO.Packaging.CompressionOption.Normal" /> compression.</param>
<summary>Creates a new part with a given URI, content type, and compression option.</summary>
<returns>The new created part.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
For the default <xref:System.IO.Packaging.ZipPackage> derived class, the <xref:System.IO.Packaging.Package.CreatePart%2A> method only supports two `compressionOption` values, <xref:System.IO.Packaging.CompressionOption.NotCompressed> or <xref:System.IO.Packaging.CompressionOption.Normal> compression. Other <xref:System.IO.Packaging.CompressionOption> values of <xref:System.IO.Packaging.CompressionOption.Maximum>, <xref:System.IO.Packaging.CompressionOption.Fast>, or <xref:System.IO.Packaging.CompressionOption.SuperFast> use <xref:System.IO.Packaging.CompressionOption.Normal> compression.
<xref:System.IO.Packaging.Package.CreatePart%2A> creates an empty <xref:System.IO.Stream> for the new part. The <xref:System.IO.Packaging.PackagePart.GetStream%2A?displayProperty=nameWithType> method can be used to obtain a reference to the stream instance associated with the part.
For additional information, see the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example shows how to create a new <xref:System.IO.Packaging.PackagePart> and then store data into the part.
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepart":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepart":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="partUri" /> or <paramref name="contentType" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">
<paramref name="partUri" /> is not a valid <see cref="T:System.IO.Packaging.PackagePart" /> uniform resource identifier (URI).</exception>
<exception cref="T:System.InvalidOperationException">A part with the specified <paramref name="partUri" /> is already present in the package.</exception>
<exception cref="T:System.ArgumentOutOfRangeException">The <paramref name="compressionOption" /> value is not valid.</exception>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
<exception cref="T:System.IO.IOException">The package is read-only (a new part cannot be added).</exception>
<block subset="none" type="overrides">
<para>
<see cref="M:System.IO.Packaging.Package.CreatePart(System.Uri,System.String,System.IO.Packaging.CompressionOption)" /> internally calls the derived class's <see cref="M:System.IO.Packaging.Package.CreatePartCore(System.Uri,System.String,System.IO.Packaging.CompressionOption)" /> method to actually create the part based on the physical format implemented in the derived class.</para>
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<altmember cref="M:System.IO.Packaging.PackUriHelper.ResolvePartUri(System.Uri,System.Uri)" />
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<Parameter Name="contentType" Type="System.String" />
<Parameter Name="compressionOption" Type="System.IO.Packaging.CompressionOption" />
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<param name="partUri">The uniform resource identifier (URI) for the part being created.</param>
<param name="contentType">The content type of the data stream.</param>
<param name="compressionOption">The compression option for the data stream.</param>
<summary>When overridden in a derived class, creates a new part in the package.</summary>
<returns>The created part.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The derived <xref:System.IO.Packaging.Package.CreatePartCore%2A> method is called by the <xref:System.IO.Packaging.Package.CreatePart%2A> method to create a part based on the physical format implemented in the derived class.
By default, a <xref:System.IO.Packaging.ZipPackage> derived class implementation of the abstract <xref:System.IO.Packaging.Package> class is provided and used. In the default operation, <xref:System.IO.Packaging.Package.CreatePart%2A> internally calls <xref:System.IO.Packaging.Package.CreatePartCore%2A> of the <xref:System.IO.Packaging.ZipPackage> class to create a new part in a ZIP file.
For the default <xref:System.IO.Packaging.ZipPackage> derived class, the <xref:System.IO.Packaging.Package.CreatePartCore%2A> method only supports two `compressionOption` values, <xref:System.IO.Packaging.CompressionOption.NotCompressed> or <xref:System.IO.Packaging.CompressionOption.Normal> compression. Other <xref:System.IO.Packaging.CompressionOption> values of <xref:System.IO.Packaging.CompressionOption.Maximum>, <xref:System.IO.Packaging.CompressionOption.Fast>, or <xref:System.IO.Packaging.CompressionOption.SuperFast> use <xref:System.IO.Packaging.CompressionOption.Normal> compression.
For more information about the package model and package parts, see Chapter 1 of the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
]]></format>
</remarks>
<block subset="none" type="overrides">
<para>The derived <see cref="M:System.IO.Packaging.Package.CreatePartCore(System.Uri,System.String,System.IO.Packaging.CompressionOption)" /> implementation should make no assumptions about the order or operations performed by the <see cref="Overload:System.IO.Packaging.Package.CreatePart" /> method that calls it.</para>
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<summary>Creates a package-level relationship to a given part.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
A package-level relationship defines an association between the package and an associated target part or resource. A package-level relationship can be one of two forms.
- Between a <xref:System.IO.Packaging.Package> to a target <xref:System.IO.Packaging.PackagePart> inside the package.
- Between a <xref:System.IO.Packaging.Package> to a target resource outside the package.
In a package-relationship the package is considered the "owner" of the relationship. When the package is deleted, all the relationships owned by the package are also deleted. The process of creating or deleting the relationship does not physically alter the target part or resource in any way.
For additional information, see the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example illustrates creating a <xref:System.IO.Packaging.PackageRelationship> between a <xref:System.IO.Packaging.Package> and a root document part.
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepackagerelationship":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepackagerelationship":::
]]></format>
</remarks>
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<Parameters>
<Parameter Name="targetUri" Type="System.Uri" />
<Parameter Name="targetMode" Type="System.IO.Packaging.TargetMode" />
<Parameter Name="relationshipType" Type="System.String" />
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<param name="targetUri">The uniform resource identifier (URI) of the target part.</param>
<param name="targetMode">Indicates if the target part is <see cref="F:System.IO.Packaging.TargetMode.Internal" /> or <see cref="F:System.IO.Packaging.TargetMode.External" /> to the package.</param>
<param name="relationshipType">A URI that uniquely defines the role of the relationship.</param>
<summary>Creates a package-level relationship to a part with a given URI, target mode, and relationship type.</summary>
<returns>The package-level relationship to the specified part.</returns>
<remarks>
<format type="text/markdown">< Uniform Resource Identifier (URI) Generic Syntax specification. The internal relative URI can be either an absolute path that starts with a forward slash ("/") character such as "/page1.xaml" or "/images/picture4.jpg", or a relative path such as "../imagespicture1.jpg" that resolves against the package root ("/") as the base URI.
If `targetMode` is specified as <xref:System.IO.Packaging.TargetMode.External>, `targetUri` can be either an absolute or relative URI formed according to the [RFC 3986](https://tools.ietf.org/html/rfc3986) Uniform Resource Identifier (URI) Generic Syntax specification. `http://www.microsoft.com/page2.xml` is an example of an absolute URI that references an external target resource "page2.xml". "images/picture1.jpg" is an example of a relative URI that also references an external target resource "1.jpg" but which resolves against the URI of the package itself.
`relationshipType` must be a URI that is formed according to the [RFC 3986](https://tools.ietf.org/html/rfc3986) Uniform Resource Identifier (URI) Generic Syntax specification. The following table shows the package-level `relationshipType` URIs defined by the Open Packaging Conventions (OPC) specification.
|Package-level Relationship|Relationship Type URI|
|---------------------------------|---------------------------|
|Core Properties|`http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties`|
|Digital Signature|`http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/signature`|
|Digital Signature Certificate|`http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/certificate`|
|Digital Signature Origin|`http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin`|
|Thumbnail|`http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail`|
For more information about packaging and package relationships, see section 1.3 of the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example illustrates how to use <xref:System.IO.Packaging.Package.CreateRelationship%2A> to create a <xref:System.IO.Packaging.PackageRelationship> between a <xref:System.IO.Packaging.Package> and a root document part.
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepackagerelationship":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepackagerelationship":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="targetUri" /> or <paramref name="relationshipType" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">The <paramref name="targetUri" /> part is a <see cref="T:System.IO.Packaging.PackageRelationship" />, or <paramref name="targetMode" /> is <see cref="F:System.IO.Packaging.TargetMode.Internal" /> and <paramref name="targetUri" /> is an absolute URI.</exception>
<exception cref="T:System.ArgumentOutOfRangeException">The value for <paramref name="targetMode" /> is not valid.</exception>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
<exception cref="T:System.IO.IOException">The package is read-only.</exception>
<altmember cref="M:System.IO.Packaging.Package.DeleteRelationship(System.String)" />
<altmember cref="M:System.IO.Packaging.Package.GetRelationship(System.String)" />
<altmember cref="M:System.IO.Packaging.Package.GetRelationships" />
<altmember cref="M:System.IO.Packaging.Package.GetRelationshipsByType(System.String)" />
<altmember cref="M:System.IO.Packaging.Package.RelationshipExists(System.String)" />
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<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.IO.Packaging.PackageRelationship</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="targetUri" Type="System.Uri" />
<Parameter Name="targetMode" Type="System.IO.Packaging.TargetMode" />
<Parameter Name="relationshipType" Type="System.String" />
<Parameter Name="id" Type="System.String">
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.Nullable(2)>]</AttributeName>
</Attribute>
</Attributes>
</Parameter>
</Parameters>
<Docs>
<param name="targetUri">The uniform resource identifier (URI) of the target part.</param>
<param name="targetMode">Indicates if the target part is <see cref="F:System.IO.Packaging.TargetMode.Internal" /> or <see cref="F:System.IO.Packaging.TargetMode.External" /> to the package.</param>
<param name="relationshipType">A URI that uniquely defines the role of the relationship.</param>
<param name="id">A unique XML identifier.</param>
<summary>Creates a package-level relationship to a part with a given URI, target mode, relationship type, and identifier (ID).</summary>
<returns>The package-level relationship to the specified part.</returns>
<remarks>
<format type="text/markdown"><).
If `id` is specified as `null` a unique ID will be automatically generated. An `id` specified by an empty string is not valid.
If `targetMode` is specified as <xref:System.IO.Packaging.TargetMode.Internal>, `targetUri` must be a relative URI that is formed according to the [RFC 3986](https://tools.ietf.org/html/rfc3986) Uniform Resource Identifier (URI) Generic Syntax specification. The internal relative URI can be either an absolute path that starts with a forward slash ("/") character such as "/page1.xaml" or "/images/picture4.jpg", or a relative path such as "../imagespicture1.jpg" that resolves against the package root ("/") as the base URI.
If `targetMode` is specified as <xref:System.IO.Packaging.TargetMode.External>, `targetUri` can be either an absolute or relative URI formed according to the [RFC 3986](https://tools.ietf.org/html/rfc3986) Uniform Resource Identifier (URI) Generic Syntax specification. `http://www.microsoft.com/page2.xml` is an example of an absolute URI that references an external target resource "page2.xml". "images/picture1.jpg" is an example of a relative URI that also references an external target resource "1.jpg" but which resolves against the URI of the package itself.
`relationshipType` must be a URI that is formed according to the [RFC 3986](https://tools.ietf.org/html/rfc3986) Uniform Resource Identifier (URI) Generic Syntax specification. The following table shows the package-level `relationshipType` URIs defined by the Open Packaging Conventions (OPC) specification.
|Package-level Relationship|Relationship Type URI|
|---------------------------------|---------------------------|
|Core Properties|`http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties`|
|Digital Signature|`http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/signature`|
|Digital Signature Certificate|`http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/certificate`|
|Digital Signature Origin|`http://schemas.openxmlformats.org/package/2006/relationships/digital-signature/origin`|
|Thumbnail|`http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail`|
For additional information about packaging and package relationships, see section 1.3 of the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
## Examples
The following example illustrates how to use <xref:System.IO.Packaging.Package.CreateRelationship%2A> to create a <xref:System.IO.Packaging.PackageRelationship> between a <xref:System.IO.Packaging.Package> and a root document part.
:::code language="csharp" source="~/snippets/csharp/System.IO.Packaging/Package/Overview/PackageWrite.cs" id="Snippetpackagewritecreatepackagerelationship":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Wpf/PackageWrite/visualbasic/packagewrite.vb" id="Snippetpackagewritecreatepackagerelationship":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="targetUri" /> or <paramref name="relationshipType" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">The <paramref name="targetUri" /> part is a <see cref="T:System.IO.Packaging.PackageRelationship" />, or <paramref name="targetMode" /> is <see cref="F:System.IO.Packaging.TargetMode.Internal" /> and <paramref name="targetUri" /> is an absolute URI.</exception>
<exception cref="T:System.ArgumentOutOfRangeException">The value for <paramref name="targetMode" /> is not valid.</exception>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
<exception cref="T:System.IO.IOException">The package is read-only.</exception>
<exception cref="T:System.Xml.XmlException">
<paramref name="id" /> is not a valid XML identifier; or a part with the specified <paramref name="id" /> already occurs in the package.</exception>
<altmember cref="M:System.IO.Packaging.Package.CreateRelationship(System.Uri,System.IO.Packaging.TargetMode,System.String)" />
<altmember cref="M:System.IO.Packaging.Package.DeleteRelationship(System.String)" />
<altmember cref="M:System.IO.Packaging.Package.GetRelationship(System.String)" />
<altmember cref="M:System.IO.Packaging.Package.GetRelationships" />
<altmember cref="M:System.IO.Packaging.Package.GetRelationshipsByType(System.String)" />
<altmember cref="M:System.IO.Packaging.Package.RelationshipExists(System.String)" />
</Docs>
</Member>
<Member MemberName="DeletePart">
<MemberSignature Language="C#" Value="public void DeletePart (Uri partUri);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void DeletePart(class System.Uri partUri) cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.DeletePart(System.Uri)" />
<MemberSignature Language="VB.NET" Value="Public Sub DeletePart (partUri As Uri)" />
<MemberSignature Language="F#" Value="member this.DeletePart : Uri -> unit" Usage="package.DeletePart partUri" />
<MemberSignature Language="C++ CLI" Value="public:
 void DeletePart(Uri ^ partUri);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="partUri" Type="System.Uri" />
</Parameters>
<Docs>
<param name="partUri">The URI of the part to delete.</param>
<summary>Deletes a part with a given URI from the package.</summary>
<remarks>
<format type="text/markdown">< Uniform Resource Identifier (URI) Generic Syntax specification. "/page1.xaml" and "/images/picture4.jpg" are examples of valid part URIs.
No exception is raised if a part with the specified `partUri` is not in the package. (You can use the <xref:System.IO.Packaging.Package.PartExists%2A> method to determine whether a part with a specified `partUri` is in the package.)
For additional information, see the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="partUri" /> is <see langword="null" />.</exception>
<exception cref="T:System.ArgumentException">
<paramref name="partUri" /> is not a valid <see cref="T:System.IO.Packaging.PackagePart" /> URI.</exception>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
<exception cref="T:System.IO.IOException">The package is read-only.</exception>
<block subset="none" type="overrides">
<para>
<see cref="M:System.IO.Packaging.Package.DeletePart(System.Uri)" /> internally calls the derived class's <see cref="M:System.IO.Packaging.Package.DeletePartCore(System.Uri)" /> method to actually delete the part based on the physical format implemented in the derived class.</para>
</block>
<altmember cref="Overload:System.IO.Packaging.Package.CreatePart" />
<altmember cref="M:System.IO.Packaging.PackUriHelper.CreatePartUri(System.Uri)" />
<altmember cref="M:System.IO.Packaging.PackUriHelper.GetPartUri(System.Uri)" />
<altmember cref="M:System.IO.Packaging.PackUriHelper.ResolvePartUri(System.Uri,System.Uri)" />
</Docs>
</Member>
<Member MemberName="DeletePartCore">
<MemberSignature Language="C#" Value="protected abstract void DeletePartCore (Uri partUri);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance void DeletePartCore(class System.Uri partUri) cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.DeletePartCore(System.Uri)" />
<MemberSignature Language="VB.NET" Value="Protected MustOverride Sub DeletePartCore (partUri As Uri)" />
<MemberSignature Language="F#" Value="abstract member DeletePartCore : Uri -> unit" Usage="package.DeletePartCore partUri" />
<MemberSignature Language="C++ CLI" Value="protected:
 abstract void DeletePartCore(Uri ^ partUri);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="partUri" Type="System.Uri" />
</Parameters>
<Docs>
<param name="partUri">The <see cref="P:System.IO.Packaging.PackagePart.Uri" /> of the <see cref="T:System.IO.Packaging.PackagePart" /> to delete.</param>
<summary>When overridden in a derived class, deletes a part with a given URI.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
By default, a <xref:System.IO.Packaging.ZipPackage> derived class implementation of the abstract <xref:System.IO.Packaging.Package> class is provided and used. In the default operation, <xref:System.IO.Packaging.Package.DeletePart%2A> internally calls <xref:System.IO.Packaging.Package.DeletePartCore%2A> of the <xref:System.IO.Packaging.ZipPackage> class to perform the actual delete operation based on the physical format implemented in the derived class.
For more information about the package model and package parts, see Chapter 1 of the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
]]></format>
</remarks>
<block subset="none" type="overrides">
<para>The derived class <see cref="M:System.IO.Packaging.Package.DeletePartCore(System.Uri)" /> implementation is called by the <see cref="M:System.IO.Packaging.Package.DeletePart(System.Uri)" /> method to the specified part based on the physical format implemented in the derived class.
The derived <see cref="M:System.IO.Packaging.Package.DeletePartCore(System.Uri)" /> implementation should make no assumptions about the order or operations performed by the <see cref="M:System.IO.Packaging.Package.DeletePart(System.Uri)" /> method that calls it.</para>
</block>
<altmember cref="M:System.IO.Packaging.Package.CreatePartCore(System.Uri,System.String,System.IO.Packaging.CompressionOption)" />
</Docs>
</Member>
<Member MemberName="DeleteRelationship">
<MemberSignature Language="C#" Value="public void DeleteRelationship (string id);" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void DeleteRelationship(string id) cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.DeleteRelationship(System.String)" />
<MemberSignature Language="VB.NET" Value="Public Sub DeleteRelationship (id As String)" />
<MemberSignature Language="F#" Value="member this.DeleteRelationship : string -> unit" Usage="package.DeleteRelationship id" />
<MemberSignature Language="C++ CLI" Value="public:
 void DeleteRelationship(System::String ^ id);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="id" Type="System.String" />
</Parameters>
<Docs>
<param name="id">The <see cref="P:System.IO.Packaging.PackageRelationship.Id" /> of the <see cref="T:System.IO.Packaging.PackageRelationship" /> to delete.</param>
<summary>Deletes a package-level relationship.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
A package-level relationship defines an association between the package and an associated target part or resource. A package-level relationship can be one of two forms.
- Between a <xref:System.IO.Packaging.Package> to a target part in the package.
- Between a <xref:System.IO.Packaging.Package> to a target resource outside the package.
In a package-relationship the package is considered the "owner" of the relationship. When the package is deleted, all the relationships owned by the package are also deleted.
No exception is raised if a relationship with the specified `id` is not in the package.
<xref:System.IO.Packaging.Package.DeleteRelationship%2A> does not physically change the target part in any way.
For more information about package relationships, see section 1.3 of the Open Packaging Conventions (OPC) specification available for download at <https://www.ecma-international.org/publications-and-standards/standards/ecma-376/>.
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="id" /> is <see langword="null" />.</exception>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
<exception cref="T:System.IO.IOException">The package is read-only.</exception>
<exception cref="T:System.Xml.XmlException">
<paramref name="id" /> is not a valid XML identifier.</exception>
</Docs>
</Member>
<Member MemberName="Dispose">
<MemberSignature Language="C#" Value="protected virtual void Dispose (bool disposing);" />
<MemberSignature Language="ILAsm" Value=".method familyhidebysig newslot virtual instance void Dispose(bool disposing) cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.Dispose(System.Boolean)" />
<MemberSignature Language="VB.NET" Value="Protected Overridable Sub Dispose (disposing As Boolean)" />
<MemberSignature Language="F#" Value="abstract member Dispose : bool -> unit
override this.Dispose : bool -> unit" Usage="package.Dispose disposing" />
<MemberSignature Language="C++ CLI" Value="protected:
 virtual void Dispose(bool disposing);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="disposing" Type="System.Boolean" />
</Parameters>
<Docs>
<param name="disposing">
<see langword="true" /> to release both managed and unmanaged resources; <see langword="false" /> to release only unmanaged resources.</param>
<summary>Flushes and saves the content of all parts and relationships, closes the package, and releases all resources.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
To make sure that all changes are correctly saved, <xref:System.IO.Packaging.Package.Dispose%2A> also finalizes, flushes, and closes all parts and relationships that are contained in the package.
For the <xref:System.IO.Packaging.Package> class, <xref:System.IO.Packaging.Package.Dispose%2A> and <xref:System.IO.Packaging.Package.Close%2A> perform the same operation - there is no reason to call <xref:System.IO.Packaging.Package.Dispose%2A> if you call <xref:System.IO.Packaging.Package.Close%2A>, or vice-versa.
<xref:System.IO.Packaging.Package.Close%2A> and <xref:System.IO.Packaging.Package.Dispose%2A> internally call <xref:System.IO.Packaging.Package.Flush%2A>.
Derived classes that allocate and manage non-memory resources should override this method to release resources when <xref:System.IO.Packaging.Package.Dispose%2A> is called. Derived-class overrides should also call <xref:System.IO.Packaging.Package.Flush%2A> and the base-class <xref:System.IO.Packaging.Package.Dispose%2A> method to make sure that base-class cleanup is always performed.
> [!NOTE]
> The `using` statement (different from the `using` namespace directive) is the recommended way to <xref:System.IO.Packaging.Package.Close%2A> and <xref:System.IO.Packaging.Package.Dispose%2A> a package.
]]></format>
</remarks>
<altmember cref="M:System.IO.Packaging.Package.Flush" />
<altmember cref="T:System.IO.Packaging.PackagePart" />
<altmember cref="T:System.IO.Packaging.PackageRelationship" />
</Docs>
</Member>
<Member MemberName="FileOpenAccess">
<MemberSignature Language="C#" Value="public System.IO.FileAccess FileOpenAccess { get; }" />
<MemberSignature Language="ILAsm" Value=".property instance valuetype System.IO.FileAccess FileOpenAccess" />
<MemberSignature Language="DocId" Value="P:System.IO.Packaging.Package.FileOpenAccess" />
<MemberSignature Language="VB.NET" Value="Public ReadOnly Property FileOpenAccess As FileAccess" />
<MemberSignature Language="F#" Value="member this.FileOpenAccess : System.IO.FileAccess" Usage="System.IO.Packaging.Package.FileOpenAccess" />
<MemberSignature Language="C++ CLI" Value="public:
 property System::IO::FileAccess FileOpenAccess { System::IO::FileAccess get(); };" />
<MemberType>Property</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>
<AssemblyVersion>4.0.5.0</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>
<AssemblyInfo>
<AssemblyName>WindowsBase</AssemblyName>
<AssemblyVersion>3.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.IO.FileAccess</ReturnType>
</ReturnValue>
<Docs>
<summary>Gets the file access setting for the package.</summary>
<value>One of the <see cref="T:System.IO.FileAccess" /> values: <see cref="F:System.IO.FileAccess.Read" />, <see cref="F:System.IO.FileAccess.Write" />, or <see cref="F:System.IO.FileAccess.ReadWrite" />.</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
The <xref:System.IO.Packaging.Package.FileOpenAccess%2A> property has no default value. The file access setting is specified in the <xref:System.IO.Packaging.Package.%23ctor%2A> constructor call when you create a new package, or in the <xref:System.IO.Packaging.Package.Open%2A> call when you open an existing package.
]]></format>
</remarks>
<exception cref="T:System.ObjectDisposedException">The package is not open (<see cref="M:System.IO.Packaging.Package.Dispose(System.Boolean)" /> or <see cref="M:System.IO.Packaging.Package.Close" /> has been called).</exception>
</Docs>
</Member>
<Member MemberName="Flush">
<MemberSignature Language="C#" Value="public void Flush ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig instance void Flush() cil managed" />
<MemberSignature Language="DocId" Value="M:System.IO.Packaging.Package.Flush" />
<MemberSignature Language="VB.NET" Value="Public Sub Flush ()" />
<MemberSignature Language="F#" Value="member this.Flush : unit -> unit" Usage="package.Flush " />
<MemberSignature Language="C++ CLI" Value="public:
 void Flush();" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyName>System.IO.Packaging</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.4.0</AssemblyVersion>