UNABLE TO EVALUATE EXPRESSION BECAUSE THE CODE IS OPTIMIZED OR A NATIVE FRAME IS ON TOP OF THE CALL STACK

Chris S

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Posted by  Chris S
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In my code I am trying to navigate to other page using

Response.Redirect(Page.ResolveUrl("abc.aspx"))

I am getting the following error

"Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack."

please help me

Thanks,
  1. Alex R

    Post:40

    Points:280
    Re: Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack

    Hi Chris,

    This problem occurs in the Response.Redirect and Server.Transfer methods because both methods call Response.End internally which ends the page execution and shifts the execution to the Application_EndRequest event in the application's event pipeline. The line of code that follows Response.End is not executed.

    To work around this problem, use one of the following methods:
    For Response.End, call the HttpContext.Current.ApplicationInstance.CompleteRequest method instead of Response.End to bypass the code execution to the Application_EndRequest event.

    For Response.Redirect, use an overload, Response.Redirect(String url, bool endResponse) that passes false for the endResponse parameter to suppress the internal call to Response.End. For example: 
      Response.Redirect ("nextpage.aspx", false);      

    If you use this workaround, the code that follows Response.Redirect is executed.
    For Server.Transfer, use the Server.Execute method instead.


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