ASP.Net Project Not Showing Crystal Report While debugging VS 2010 C#

Hi All,

i m facing an issue in my project my which has many crystal reports, In debugging Mode it doesn't shows Crystal report (CrystalReportViewer)  using VS10 C# ASP.Net. however when i publish/deploy my project in IIS it is working and showing all crystal reports.

i am unable to sort this problem. and i thing this has something wrong in Web.Config

kindly advice..

regards,
Naveed