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TreeNodeEventHandler.xml
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TreeNodeEventHandler.xml
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<Type Name="TreeNodeEventHandler" FullName="System.Web.UI.WebControls.TreeNodeEventHandler">
<TypeSignature Language="C#" Value="public delegate void TreeNodeEventHandler(object sender, TreeNodeEventArgs e);" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi sealed TreeNodeEventHandler extends System.MulticastDelegate" />
<TypeSignature Language="DocId" Value="T:System.Web.UI.WebControls.TreeNodeEventHandler" />
<TypeSignature Language="VB.NET" Value="Public Delegate Sub TreeNodeEventHandler(sender As Object, e As TreeNodeEventArgs)" />
<TypeSignature Language="F#" Value="type TreeNodeEventHandler = delegate of obj * TreeNodeEventArgs -> unit" />
<TypeSignature Language="C++ CLI" Value="public delegate void TreeNodeEventHandler(System::Object ^ sender, TreeNodeEventArgs ^ e);" />
<AssemblyInfo>
<AssemblyName>System.Web</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Base>
<BaseTypeName>System.Delegate</BaseTypeName>
</Base>
<Parameters>
<Parameter Name="sender" Type="System.Object" />
<Parameter Name="e" Type="System.Web.UI.WebControls.TreeNodeEventArgs" />
</Parameters>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Docs>
<param name="sender">The source of the event.</param>
<param name="e">A <see cref="T:System.Web.UI.WebControls.TreeNodeEventArgs" /> that contains the event data.</param>
<summary>Represents the method that will handle the <see cref="E:System.Web.UI.WebControls.TreeView.TreeNodeCollapsed" />, <see cref="E:System.Web.UI.WebControls.TreeView.TreeNodeDataBound" />, <see cref="E:System.Web.UI.WebControls.TreeView.TreeNodeExpanded" />, or <see cref="E:System.Web.UI.WebControls.TreeView.TreeNodePopulate" /> event of the <see cref="T:System.Web.UI.WebControls.TreeView" /> control.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
When you create a <xref:System.Web.UI.WebControls.TreeNodeEventHandler> delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see [Handling and Raising Events](/dotnet/standard/events/).
## Examples
The following code example demonstrates how to use the <xref:System.Web.UI.WebControls.TreeNodeEventHandler> delegate to register an event-handling method programmatically.
:::code language="aspx-csharp" source="~/snippets/csharp/VS_Snippets_WebNet/TreeViewTreeNodeEventHandler/CS/treeviewtreenodeeventhandlercs.aspx" id="Snippet1":::
:::code language="aspx-vb" source="~/snippets/visualbasic/VS_Snippets_WebNet/TreeViewTreeNodeEventHandler/VB/treeviewtreenodeeventhandlervb.aspx" id="Snippet1":::
]]></format>
</remarks>
<altmember cref="T:System.Web.UI.WebControls.TreeView" />
<altmember cref="E:System.Web.UI.WebControls.TreeView.TreeNodeCollapsed" />
<altmember cref="E:System.Web.UI.WebControls.TreeView.TreeNodeDataBound" />
<altmember cref="E:System.Web.UI.WebControls.TreeView.TreeNodeExpanded" />
<altmember cref="E:System.Web.UI.WebControls.TreeView.TreeNodePopulate" />
<altmember cref="T:System.Web.UI.WebControls.TreeNodeEventArgs" />
</Docs>
</Type>