TreeNode::CollapseAll Method
Collapses the current node and all its child nodes.
Assembly: System.Web (in System.Web.dll)
Use the CollapseAll method to conveniently collapse the current node and all its child nodes.
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As an alternative, you can also set the Expanded property of the current node and each of its child nodes to false. |
To collapse only the current node, consider using the Collapse method.
CollapseAll will collapse all the nodes in the entire tree.
The following code example demonstrates how to use the CollapseAll method to programmatically collapse a node and all its child nodes in the TreeView control. For this example to work correctly, you must copy the sample XML data below to a file named Book.xml.
The following code is sample XML data for the previous example.
<Book Title="Book Title">
<Chapter Heading="Chapter 1">
<Section Heading="Section 1">
</Section>
<Section Heading="Section 2">
</Section>
</Chapter>
<Chapter Heading="Chapter 2">
<Section Heading="Section 1">
</Section>
</Chapter>
</Book>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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