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TreeView.Target Property

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

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

public string Target { get; set; }
<asp:TreeView Target="String" />

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

Renders the content in


A new window without frames.


The immediate frameset parent.


The search pane.


The frame with focus.


The full window without frames.


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.

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.


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.

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"
<html xmlns="" >
  <head runat="server">
    <title>TreeView Target Example</title>
    <form id="form1" runat="server">

      <h3>TreeView Target Example</h3>

      <asp:TreeView id="LinksTreeView"


          <asp:TreeNode Value="Home" 

            <asp:TreeNode Value="Page 1" 

              <asp:TreeNode Value="Section 1" 
                Text="Section 1"/>


            <asp:TreeNode Value="Page 2" 
              Text="Page 2">






.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.