FormsAuthentication.GetRedirectUrl Method
Updated: January 2010
Returns the redirect URL for the original request that caused the redirect to the login page.
Assembly: System.Web (in System.Web.dll)
public static function GetRedirectUrl( userName : String, createPersistentCookie : boolean ) : String
Parameters
- userName
- Type: System.String
The name of the authenticated user.
- createPersistentCookie
- Type: System.Boolean
This parameter is ignored.
You can use this method when you want to perform the redirect in your application code instead of using the RedirectFromLoginPage method.
The GetRedirectUrl method returns the URL specified in the query string using the ReturnURL variable name. For example, in the URL http://www.contoso.com/login.aspx?ReturnUrl=caller.aspx, the GetRedirectUrl method returns the return URL caller.aspx. If the ReturnURL variable does not exist, the GetRedirectUrl method returns the URL in the DefaultUrl property.
ASP.NET automatically adds the return URL when the browser is redirected to the login page.
By default, the ReturnUrl variable must refer to a page within the current application. If ReturnUrl refers to a page in a different application or on a different server, the GetRedirectUrl methods returns the URL in the DefaultUrl property. If you want to allow the return URL to refer to a page outside the current application, you must set the EnableCrossAppRedirects property to true using the enableCrossAppRedirects attribute of the forms configuration element.
Security Note: |
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Setting the EnableCrossAppRedirects property to true to allow cross-application redirects is a potential security threat. For more information, see the EnableCrossAppRedirects property. |
The following code example redirects authenticated users to the URL returned from the GetRedirectUrl method.
Security Note: |
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This example contains a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
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.
Security Note: