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PostBackOptions.ActionUrl Property

Gets or sets the target URL for the postback of a Web Forms page.

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

public string ActionUrl { get; set; }

Property Value

Type: System.String
The URL for the postback of a Web Forms page. The default value is an empty string ("").

The ActionUrl property of the PostBackOptions class specifies the URL for the action attribute of a Web Forms page. The ActionUrl property can be used to specify which Web Forms page to post data back to, causing a cross-page post. For more information on cross-page posting, see Cross-Page Posting in ASP.NET Web Pages.

The following code example demonstrates using the ActionUrl property of a PostBackOptions object to cause a cross-page postback if a user positions the mouse pointer on a Label control.

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

  void Page_Init(object sender, EventArgs e)
  {

    string reference = Page.ClientScript.GetPostBackEventReference
      (new PostBackOptions(this, "", "http://www.wingtiptoys.com", false, true, false, true, false, ""));
    Label1.Attributes.Add("onmouseover", reference);

  } 

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ActionUrl Example Page</title>
  </head>
  <body>
    <form id="form1" runat="server">
      <h3>PostBackOptions ActionUrl Example</h3>
      <asp:Label runat="server" 
        id="Label1" >
        Placing the mouse pointer on this label will cause a cross-page post to occur.
      </asp:Label>
    </form>
  </body>
</html>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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