TreeNode.Expand Method
.NET Framework 3.0
Expands the current tree node.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
Use the Expand method to conveniently expand the current node.
Note: |
|---|
| As an alternative, you can also set the Expanded property to true. |
To expand the current node and all its child nodes, consider using the ExpandAll method.
ExpandAll will expand all the nodes in the entire tree.
The value of this property is stored in view state.
The following code example demonstrates how to use the Expand method to programmatically expand a node 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>
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