TreeNode.Target Property

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets the target window or frame in which to display the Web page content associated with a node.

public:
 property System::String ^ Target { System::String ^ get(); void set(System::String ^ value); };

public string Target { get; set; }

member this.Target : string with get, set

Public Property Target As String

Property Value

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.

Note: Check your browser documentation to determine whether the _search value is supported. For example, Microsoft Internet Explorer 5.0 and later support the _search target value.

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

Examples

The following code example demonstrates how to set up the frames for the next example.


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>TreeView Frameset Example</title>
</head>
         
    <frameset cols="30%, 75%">
   
        <frame title="MenuFrame" name="Menu" src="TreeViewFramecs.aspx"/>
        <frame title="ContentFrame" name="Content" src="Home.aspx"/> 
           
    </frameset>      
   
</html>


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>TreeView Frameset Example</title>
</head>
         
    <frameset cols="30%, 75%">
   
        <frame title="MenuFrame" name="Menu" src="TreeViewFramevb.aspx"/>
        <frame title="ContentFrame" name="Content" src="Home.aspx"/> 
           
    </frameset>      
   
</html>

The following code example demonstrates how to use the Target property to specify the frame in which to display the linked content. This example is used within the frameset of the previous example to display a table of contents.


<%@ 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 Declarative Syntax Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeView Declarative Syntax Example</h3>
      
      <asp:TreeView id="SampleTreeView" 
        runat="server">
         
        <Nodes>
        
          <asp:TreeNode Value="Home" 
            NavigateUrl="Home.aspx" 
            Text="Home"
            Target="Content" 
            Expanded="True">
             
            <asp:TreeNode Value="Page 1" 
              NavigateUrl="Page1.aspx" 
              Text="Page1"
              Target="Content">
               
              <asp:TreeNode Value="Section 1" 
                NavigateUrl="Section1.aspx" 
                Text="Section 1"
                Target="Content"/>
                 
            </asp:TreeNode>              
            
            <asp:TreeNode Value="Page 2" 
              NavigateUrl="Page2.aspx"
              Text="Page 2"
              Target="Content">
               
            </asp:TreeNode> 
            
          </asp:TreeNode>
        
        </Nodes>
        
      </asp:TreeView>

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


<%@ Page Language="VB" %>

<!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 Declarative Syntax Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeView Declarative Syntax Example</h3>
      
      <asp:TreeView id="SampleTreeView" 
        runat="server">
         
        <Nodes>
        
          <asp:TreeNode Value="Home" 
            NavigateUrl="Home.aspx" 
            Text="Home"
            Target="Content" 
            Expanded="True">
             
            <asp:TreeNode Value="Page 1" 
              NavigateUrl="Page1.aspx" 
              Text="Page1"
              Target="Content">
               
              <asp:TreeNode Value="Section 1" 
                NavigateUrl="Section1.aspx" 
                Text="Section 1"
                Target="Content"/>
                 
            </asp:TreeNode>              
            
            <asp:TreeNode Value="Page 2" 
              NavigateUrl="Page2.aspx"
              Text="Page 2"
              Target="Content">
               
            </asp:TreeNode> 
            
          </asp:TreeNode>
        
        </Nodes>
        
      </asp:TreeView>

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

Remarks

Use the Target property to specify the window or frame in which to display the Web content linked to a node when that node is clicked.

Note

Setting this property overrides the Target property of the TreeView control.

Note

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 TreeNode object must be XHTML 1.1-compliant. For more information, see XHTML Standards in Visual Studio and ASP.NET.

When creating accessible Web pages, it is strongly recommended you 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.

Applies to

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