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TreeNodeBinding.ToolTip Property

Gets or sets the ToolTip text for a node to which the TreeNodeBinding object is applied.

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

public string ToolTip { get; set; }

Property Value

Type: System.String
The ToolTip text for a node to which the TreeNodeBinding object is applied. The default is an empty string (""), which indicates that the ToolTip property is not set.

When the TreeView control is bound to a data source, use the ToolTip property to specify the value to bind to the ToolTip property of a TreeNode object. This binding relationship affects all TreeNode objects to which the TreeNodeBinding object is applied. The ToolTip text is displayed when the mouse pointer is positioned over the node.

NoteNote

You can selectively override the ToolTip property by setting the ToolTip property of each node directly.

Instead of using the ToolTip property to bind the same ToolTip text to each node, you can bind the ToolTip property of a TreeNode object to a field of a data source by setting the ToolTipField property.

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.

This section contains two code examples. The first code example demonstrates how to use the ToolTip property to specify the ToolTip text for a node to which the TreeNodeBinding object is applied. The second code example provides sample XML data for the first code example.

The following example demonstrates how to use the ToolTip property to specify the ToolTip text for a node to which the TreeNodeBinding object is applied. For this example to work correctly, you must copy the sample XML data, provided after this code example, to a file named Booklist.xml.



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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeViewBinding Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>TreeViewBinding Example</h3>

      <!-- Set the Text, ImageUrl, ImageToolTip, -->
      <!-- NavigateUrl, Value, and ToolTip       -->
      <!-- properties of a TreeNodeBinding       -->
      <!-- object declaratively.                 -->   
      <asp:TreeView id="BookTreeView" 
        DataSourceID="BookXmlDataSource"
        Target="_blank" 
        runat="server">

        <DataBindings>
          <asp:TreeNodeBinding DataMember="Books" 
            Depth="0" 
            TextField="Text"/>
          <asp:TreeNodeBinding DataMember="Book" 
            Depth="1" 
            Text="Book Title" 
            ImageUrl="Image.jpg"
            ImageToolTip="Book Image" 
            NavigateUrl="http://www.microsoft.com" 
            Value="BookID" 
            ToolTip="Book Information"/>
          <asp:TreeNodeBinding DataMember="Description" 
            Depth="2" 
            TextField="Text"/>
          <asp:TreeNodeBinding DataMember="Price" 
            Depth="2" 
            TextField="Value"/>
        </DataBindings>

      </asp:TreeView>

      <asp:XmlDataSource id="BookXmlDataSource"  
        DataFile="Booklist.xml"
        runat="server">
      </asp:XmlDataSource>

    </form>
  </body>
</html>



The following code example provides sample XML data for the preceding code example.

<Books Text="Books List">
    <Book Text="Book Title One"
        Value="1" 
        Image="Bookimage1.jpg"
        ImageToolTip="Book 1 Photo" 
        Nav="http://www.microsoft.com"
        Tip="Book Title 1">
        <Description Text="Book Description">
        </Description>
        <Price Value="$1.99">
        </Price>
        <Author Text="Author Name"
            Value="LastName" 
            Image="Authorimage1.jpg" 
            Nav="http://www.microsoft.com"
            Tip="Author Name">
        </Author>
    </Book>
    <Book Text="Book Title Two"
        Value="2" 
        Image="Bookimage2.jpg"
        ImageToolTip="Book 2 Photo" 
        Nav="http://www.microsoft.com"
        Tip="Click Me">
        <Description Text="Book Description">
        </Description>
        <Price Value="$2.99">
        </Price>
        <Author Text="Author Name"
            Value="LastName" 
            Image="Authorimage2.jpg" 
            Nav="http://www.microsoft.com"
            Tip="Author Name">
        </Author>
    </Book>
</Books>

.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.
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