ExpandImageToolTip Property

TreeView.ExpandImageToolTip Property

 

Gets or sets the ToolTip for the image that is displayed for the expandable node indicator.

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

public string ExpandImageToolTip { get; set; }

Property Value

Type: System.String

The ToolTip for the image displayed for the expandable node indicator.

Use the ExpandImageToolTip property to specify a ToolTip for the image. The text that you specify provides Assistive Technology devices with a description of the image that can be used to make the control more accessible.

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 ExpandImageToolTip property to specify a ToolTip for an image that is displayed for the expandable node indicator.


<%@ 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>TreeView Custom Images Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>TreeView Custom Images Example</h3>

      <!-- Set the custom images of this TreeView control -->
      <!-- declaratively.                                 -->
      <asp:TreeView id="CustomTreeView"
        NoExpandImageUrl="Space.jpg"
        CollapseImageUrl="Minus.jpg"
        CollapseImageToolTip="Collapse Node"
        ExpandImageUrl="Plus.jpg"
        ExpandImageToolTip="Expand Node"
        RootNodeStyle-ImageUrl="Root.jpg"
        ParentNodeStyle-ImageUrl="Parent.jpg"
        LeafNodeStyle-ImageUrl="Leaf.jpg" 
        ImageSet="Custom"
        runat="server">

        <Nodes>

          <asp:TreeNode Value="Home" 
            NavigateUrl="Home.aspx" 
            Text="Home"
            Target="_blank" 
            Expanded="True">

            <asp:TreeNode Value="Page 1" 
              NavigateUrl="Page1.aspx" 
              Text="Page 1"
              Target="_blank">

              <asp:TreeNode Value="Section 1"
                ImageUrl="custom.jpg" 
                NavigateUrl="Section1.aspx" 
                Text="Section 1"
                Target="_blank">
              </asp:TreeNode>

            </asp:TreeNode>

            <asp:TreeNode Value="Page 2" 
              Selected="True" 
              NavigateUrl="Page2.aspx"
              Text="Page 2"
              Target="_blank">
            </asp:TreeNode>

          </asp:TreeNode>

        </Nodes>

      </asp:TreeView> 


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

.NET Framework
Available since 2.0
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