title: Error in using report viewer in visual studio 2012 in design mode
body: <p>I'm using visual studio 2012 to develop a MVC application. I have added an ascx page to my project to put the report viewer in. When I drag and drop the ReportViewer component from toolbox in the page, It doesn't show the ReportViewer correctly and shows this error on it:</p>
  
  <p><code>Failed to create designer 'Microsoft.Reporting.WebForms.ReportViewer, Microsoft.Reporting.WebForms version 10.0.0.0, Culture=natural, PublicKeyToken=b03f5f7f11d50a3a'</code></p>
  
  <p>I have also added Microsoft.ReportViewer.WebForms assembly to the project References. Is there anything wrong with reportviewer in Visual Studio 2012? Any help is appreciated in advance.</p>