Why Response.Redirect causes System.Threading.ThreadAbortException?

Question

When I use Response.Redirect(...) to redirect my form to a new page I get the error:

A first chance exception of type \'System.Threading.ThreadAbortEx

Answer 1

The correct pattern is to call the Redirect overload with endResponse=false and make a call to tell the IIS pipeline that it should advance directly to the EndRequest stage once you return control:

Response.Redirect(url, false);
Context.ApplicationInstance.CompleteRequest();

This blog post from Thomas Marquardt provides additional details, including how to handle the special case of redirecting inside an Application_Error handler.