संपादित करें

इसके माध्यम से साझा किया गया

TreeView.Target Property

  • Reference

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Gets or sets the target window or frame in which to display the Web page content that is 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 Renders the content in
_blank A new window without frames.
_parent The immediate frameset parent.
_search The search pane.
_self The frame with focus.
_top The full window without frames.

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

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

Examples

The following code example demonstrates how to use the Target property to display the Web content that is linked to a node in a new window when that node is clicked.


<%@ 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 Target Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeView Target Example</h3>
      
      <asp:TreeView id="LinksTreeView"
         Target="_blank" 
         runat="server">
         
        <Nodes>
        
          <asp:TreeNode Value="Home" 
            NavigateUrl="Home.aspx" 
            Text="Home"
            Expanded="True">
             
            <asp:TreeNode Value="Page 1" 
              NavigateUrl="Page1.aspx" 
              Text="Page1">
               
              <asp:TreeNode Value="Section 1" 
                NavigateUrl="Section1.aspx" 
                Text="Section 1"/>
                 
            </asp:TreeNode>              
            
            <asp:TreeNode Value="Page 2" 
              NavigateUrl="Page2.aspx"
              Text="Page 2">
               
            </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 Target Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeView Target Example</h3>
      
      <asp:TreeView id="LinksTreeView"
         Target="_blank" 
         runat="server">
         
        <Nodes>
        
          <asp:TreeNode Value="Home" 
            NavigateUrl="Home.aspx" 
            Text="Home"
            Expanded="True">
             
            <asp:TreeNode Value="Page 1" 
              NavigateUrl="Page1.aspx" 
              Text="Page1">
               
              <asp:TreeNode Value="Section 1" 
                NavigateUrl="Section1.aspx" 
                Text="Section 1"/>
                 
            </asp:TreeNode>              
            
            <asp:TreeNode Value="Page 2" 
              NavigateUrl="Page2.aspx"
              Text="Page 2">
               
            </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 that is linked to a node when that node is clicked.

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 TreeView 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 Controls and Accessibility.

The value of this property is stored in view state.

Applies to

See also