Unable to evaluate expression because the code is optimized or a nativeframe is on top of the call stack

When calling Response.Redirect from within a Try-Catch block you may get the error message ‘Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack’. The exact reason for this is unknown to me but to fix the issue make sure that anytime Response.Rediredt is called int a Try-Catch you set the second parameter (EndResponse) to false so that the response if not killed after the return.

try

{

HttpContext.Current.Response.Redirect(

_targetUrl, false);

}

catch (Exception ex)

{

//Handle Exception

}

One thought on “Unable to evaluate expression because the code is optimized or a nativeframe is on top of the call stack

  • Hi..

    This works for local environment, but it does not work when I upload it to server.

    Can you please help with it.?

    Like

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