DependencyPropertyChangedEventHandler.xml

<Type Name="DependencyPropertyChangedEventHandler" FullName="System.Windows.DependencyPropertyChangedEventHandler">
  <TypeSignature Language="C#" Value="public delegate void DependencyPropertyChangedEventHandler(object sender, DependencyPropertyChangedEventArgs e);" />
  <TypeSignature Language="ILAsm" Value=".class public auto ansi sealed DependencyPropertyChangedEventHandler extends System.MulticastDelegate" />
  <TypeSignature Language="DocId" Value="T:System.Windows.DependencyPropertyChangedEventHandler" />
  <TypeSignature Language="VB.NET" Value="Public Delegate Sub DependencyPropertyChangedEventHandler(sender As Object, e As DependencyPropertyChangedEventArgs)" />
  <TypeSignature Language="F#" Value="type DependencyPropertyChangedEventHandler = delegate of obj * DependencyPropertyChangedEventArgs -&gt; unit" />
  <TypeSignature Language="C++ CLI" Value="public delegate void DependencyPropertyChangedEventHandler(System::Object ^ sender, DependencyPropertyChangedEventArgs e);" />
  <AssemblyInfo>
    <AssemblyName>WindowsBase</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.Delegate</BaseTypeName>
  </Base>
  <Parameters>
    <Parameter Name="sender" Type="System.Object" />
    <Parameter Name="e" Type="System.Windows.DependencyPropertyChangedEventArgs" />
  </Parameters>
  <ReturnValue>
    <ReturnType>System.Void</ReturnType>
  </ReturnValue>
  <Docs>
    <param name="sender">The source of the event.</param>
    <param name="e">The event data.</param>
    <summary>Represents the method that will handle events raised when a <see cref="T:System.Windows.DependencyProperty" /> is changed on a particular <see cref="T:System.Windows.DependencyObject" /> implementation.</summary>
    <remarks>
      <format type="text/markdown"><![CDATA[  
  
## Remarks  
 This delegate is the handler signature for particular events that report dependency property changes.  
  
 An event that uses this handler is exposed as a common language runtime (CLR) event, not as a routed event. Typically these events follow the naming pattern `Is(`*PropertyName*`)Changed`, where *PropertyName* is the <xref:System.Windows.DependencyProperty.Name%2A?displayProperty=nameWithType> of the property that changed. The arguments of the event are used to query the old and new value of the property, as reported by the particular event. Typically there is a 1:1 correspondence between properties that change and a particular event that reports the change. It is also possible, though uncommon, to have the same event report changes to more than one property. In this case, the <xref:System.Windows.DependencyPropertyChangedEventArgs> should be checked to determine the property that changed.  
  
 The event data class <xref:System.Windows.DependencyPropertyChangedEventArgs> has a wider usage than just this delegate. <xref:System.Windows.DependencyPropertyChangedEventArgs> is also used to communicate data for <xref:System.Windows.PropertyChangedCallback> implementations, which are part of the customization features and internals of the WPF property system, and by the <xref:System.Windows.DependencyObject.OnPropertyChanged%2A> virtual method, which can be overridden to provide class-specific notifications whenever any dependency property on the object changes.  
  
 ]]></format>
    </remarks>
    <altmember cref="T:System.Windows.DependencyPropertyChangedEventArgs" />
    <altmember cref="T:System.Windows.RoutedEvent" />
  </Docs>
</Type>