RedirectFromPage do not work with special chars in the ReturnUrl

Question

I am working on a form based auth module for MS SQL reporting Services which is described here:

So far so good, but I run into this problem. The URL I call redirect to the login page to authenticate and then the page redirect back to the return url.

URL sample call:

http://thor/ReportServer/Pages/ReportViewer.aspx?%2fSampleUserReport&rs:Command=Render

This line crash:

FormsAuthentication.RedirectFromLoginPage(m_username, false);

Exception:

System.Web.HttpException: Der für die Umleitung von Anforderungen angegebene Rückgabe-URL ist ungültig.
   bei System.Web.Security.FormsAuthentication.GetReturnUrl(Boolean useDefaultIfAbsent)
   bei System.Web.Security.FormsAuthentication.GetRedirectUrl(String userName, Boolean createPersistentCookie)
   bei TQsoft.Windows.Products.SSRS.Authentication.Logon.ServerBtnLogon_Click(Object sender, EventArgs e)

So after investigating and debugging I found out if I skip &rs:Command=Render it works.

So the only special char in there I can imagine making problem is the : char.

Any idea how to make it work since reporting services are working with those in the navigation a lot.

UPDATE

It turns out that I have to redirect myself like this:

Response.Redirect(Request.QueryString["ReturnUrl"].Replace(":","%3A"));
Context.ApplicationInstance.CompleteRequest();

But this throws another exception:

System.Threading.ThreadAbortException: Der Thread wurde abgebrochen.
   bei System.Threading.Thread.AbortInternal()
   bei System.Threading.Thread.Abort(Object stateInfo)
   bei System.Web.HttpResponse.End()
   bei System.Web.HttpResponse.Redirect(String url, Boolean endResponse)
   bei System.Web.HttpResponse.Redirect(String url)
   bei TQsoft.Windows.Products.SSRS.Authentication.Logon.ServerBtnLogon_Click(Object sender, EventArgs e)

I am really a rookie on asp.net, but start to hate it while RoR wins atm to me.

Answer 1

I had this issue before but with hebrew char that I wanted to pass using URL link.

Try to convert the char using %3A.

Edit

I use Google translate to convert those chars: just write the chars/String, hit translate and copy the relevant part in the URL.

Answer 2

Response.Redirect(HttpServerUtility.UrlEncode(Request.QueryString["ReturnUrl"]));

does this work for you, replacing characters such as a question mark (?), ampersand (&), slash mark (/), and spaces.

http://msdn.microsoft.com/it-it/library/zttxte6w.aspx