TreeNode::CollapseAll Method ()

 

Collapses the current node and all its child nodes.

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

public:
void CollapseAll()

Use the CollapseAll method to conveniently collapse the current node and all its child nodes.

System_CAPS_noteNote

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.

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>

.NET Framework
Available since 2.0
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