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TreeNodeBinding.Target Property

Gets or sets the target window or frame in which to display the Web page content that is associated with a node to which the TreeNodeBinding object is applied.

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

public string Target { get; set; }

Property Value

Type: System.String
The target window or frame in which to display the linked Web page content. Values must begin with a letter in the range of A through Z (case insensitive), except for certain special values that begin with an underscore, as shown in the following table.

Target value

Description

_blank

Renders the content in a new window without frames.

_parent

Renders the content in the immediate frameset parent.

_search

Renders the content in the search pane.

_self

Renders the content in the frame with focus.

_top

Renders the content in the full window without frames.

NoteNote

Check your browser documentation to determine if the _search value is supported. For example, Microsoft Internet Explorer version 5.0 and later supports the _search target value.

The default is an empty string (""), which refreshes the window or frame with focus.

When the TreeView control is bound to a data source, use the Target property to specify the value to bind to the Target property of a TreeNode object. This binding relationship affects all TreeNode objects to which the TreeNodeBinding object is applied. The Target property is used to specify the window or frame in which to display the Web content that is linked to a node when that node is clicked.

NoteNote

Setting the Target property overrides the Target property of the TreeView control for the nodes to which the TreeNodeBinding object is applied. You can selectively override the Target property by setting the Target property of each node directly.

NoteNote

The Target property renders as a target attribute. The target attribute on anchor elements is not allowed in the XHTML 1.1 document type definition. Do not set the Target property, if the rendered output for the TreeNodeBinding control must be XHTML 1.1 compliant. For more information, see XHTML Standards in Visual Studio and ASP.NET.

When creating accessible Web pages, you should avoid using the Target property to target another window. For more information, see ASP.NET Accessibility.

The value of this property is stored in view state.

This section contains two code examples. The first code example demonstrates how to use the Target property to specify that the Web page that is associated with the root node should be displayed in a new window. The second code example provides sample XML data for the first code example.

The following example demonstrates how to use the Target property to specify that the Web page that is associated with the root node should be displayed in a new window. For this example to work correctly, you must copy the sample XML data, provided after this code example, to a file named Book.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>TreeNodeBinding Target Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>TreeNodeBinding Target Example</h3>

      <!-- Clicking the root node will navigate  -->
      <!-- the user to another page. Because the -->
      <!-- Target property is set to "_blank",   -->
      <!-- the linked page is displayed in a new -->
      <!-- window.                               -->
      <asp:TreeView id="BookTreeView" 
         DataSourceID="BookXmlDataSource"
         runat="server">

        <DataBindings>
          <asp:TreeNodeBinding DataMember="Book" 
            Depth="0" 
            TextField="Title"
            NavigateUrl="~\Page1.aspx"
            Target="_blank"/>
          <asp:TreeNodeBinding DataMember="Chapter" 
            Depth="1" 
            TextField="Heading"/>
          <asp:TreeNodeBinding DataMember="Appendix" 
            Depth="1" 
            TextField="Heading"/>
        </DataBindings>

      </asp:TreeView>

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

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



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

<Book Title="Book Title">
    <Chapter Heading="Chapter 1">
        <Section Heading="Section 1">
        </Section>
        <Section Heading="Section 2">
        </Section>
    </Chapter>
    <Chapter Heading="Chapter 2">
        <Section Heading="Section 1">
        </Section>
    </Chapter>
    <Appendix Heading="Appendix A">
    </Appendix>
</Book>

.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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