TreeNode.Expand Method

Expands the current tree node.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public:
void Expand ()
public void Expand ()
public function Expand ()
Not applicable.

Use the Expand method to conveniently expand the current node.

NoteNote:

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.

No code example is currently available or this language may not be supported.

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 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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