This documentation is archived and is not being maintained.

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.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

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.