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

}

Published by

Tim Clark

Experienced Business Owner, Chief Information Officer, Vice President, Chief Software Architect, Application Architect, Project Manager, Software Developer, Senior Web Developer, Graphic Designer & 3D Modeler, University Instructor, University Program Chair, Academic Director. Specialties: Ruby, Ruby on Rails, JavaScript, JQuery, AJAX, Node.js, React.js, Angular.js, MySQL, PostgreSQL, MongoDB, SQL Server, Responsive Design, HTML5, XHTML, CSS3, C#, ASP.net, Project Management, System Design/Architecture, Web Design, Web Development, Adobe CS6 (Photoshop, Illustrator)

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

  1. 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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