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TreeNode.Value Property

Gets or sets a non-displayed value used to store any additional data about the node, such as data used for handling postback events.

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

member Value : string with get, set

Property Value

Type: System.String
Supplemental data about the node that is not displayed. The default value is an empty string ("").

The Value property is used to supplement the Text property by storing any additional data associated with the node. This value is not displayed in the control and is commonly used to store data for handling postback events.


If the Value property contains a null reference (Nothing in Visual Basic), the get accessor returns the value of the Text property. If the Text property, in turn, contains a null reference (Nothing in Visual Basic), Empty is returned.


Nodes at the same level must each have a unique value for the Value property; the TreeView control cannot distinguish between different nodes at the same level that have the same value. In this scenario, if the user clicks a node that has a duplicate value, the node that appears first in the TreeView control is selected.

The value of this property is stored in view state.

The value of this property, when set, can be saved automatically to a resource file by using a designer tool. For more information, see LocalizableAttribute and ASP.NET Globalization and Localization.

The following code example demonstrates how to use the Value property to store the key field.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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