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TreeView.ExpandDepth Property

Gets or sets the number of levels that are expanded when a TreeView control is displayed for the first time.

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

public int ExpandDepth { get; set; }
<asp:TreeView ExpandDepth="Int32" />

Property Value

Type: System.Int32
The depth to display when the TreeView is initially displayed. The default is -1, which displays all the nodes.

Use the ExpandDepth property to control the rendering of the TreeView control the first time that it is displayed. On subsequent postbacks, the nodes retain their current expanded state.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0