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TreeNode.ToolTip Property

Note: This property is new in the .NET Framework version 2.0.

Gets or sets the ToolTip text for the node.

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

public string ToolTip { get; set; }
/** @property */
public String get_ToolTip ()

/** @property */
public void set_ToolTip (String value)

public function get ToolTip () : String

public function set ToolTip (value : String)

Property Value

The ToolTip text for the node. The default is an empty string ("").

Use the ToolTip property to specify the ToolTip text for the node. The ToolTip text is displayed when the mouse pointer is positioned over the node.

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 ToolTip property to provide ToolTips for the nodes in the TreeView control.

<%@ Page Language="C#" %>

    <form runat="server">
      <h3>TreeNode ToolTip Example</h3>
      <h5>Position the mouse pointer over a node.</h5>
      <asp:TreeView id="LinksTreeView"
        Font-Name= "Arial"
          <asp:TreeNodeStyle ChildNodesPadding="10" 
          <asp:TreeNodeStyle ChildNodesPadding="5" 
          <asp:TreeNodeStyle ChildNodesPadding="5" 
          <asp:TreeNodeStyle ChildNodesPadding="10" 
          <asp:TreeNode Text="Table of Contents"
            ToolTip="Table of Contents Description">
            <asp:TreeNode Text="Chapter One"
               ToolTip="Chapter One Description">
              <asp:TreeNode Text="Section 1.0"
                ToolTip="Section 1.0 Description">
                <asp:TreeNode Text="Topic 1.0.1"/>
                <asp:TreeNode Text="Topic 1.0.2"/>
                <asp:TreeNode Text="Topic 1.0.3"/>
              <asp:TreeNode Text="Section 1.1"
                ToolTip="Section 1.1 Description">
                <asp:TreeNode Text="Topic 1.1.1"/>
                <asp:TreeNode Text="Topic 1.1.2"/>
                <asp:TreeNode Text="Topic 1.1.3"/>
                <asp:TreeNode Text="Topic 1.1.4"/>
            <asp:TreeNode Text="Chapter Two"
              ToolTip="Chapter Two Description">
              <asp:TreeNode Text="Section 2.0"
                ToolTip="Section 2.0 Description">
                <asp:TreeNode Text="Topic 2.0.1"/>
                <asp:TreeNode Text="Topic 2.0.2"/>
          <asp:TreeNode Text="Appendix A" 
            ToolTip="Appendix A Description"/>
          <asp:TreeNode Text="Appendix B" 
            ToolTip="Appendix B Description"/>
          <asp:TreeNode Text="Appendix C" 
            ToolTip="Appendix C Description"/>


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

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

.NET Framework

Supported in: 2.0

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