I have crystal report 2010 installed with VS 2010.i have created a crystal report which is works fine in the localhost but the issue is once i publish my website to IIS the
The best answer for this question is here!
http://social.msdn.microsoft.com/Forums/en-US/vscrystalreports/thread/ef56f72b-7ede-47d8-ba9e-9e63b9ac0203
Copy C:\inetpub\wwwroot\aspnet_client\system_web\4_0_30319\crystalreportviewers13 (you'll got it when you install -CRforVS_redist_install_32bit_13_0.exe) To your project such as (ProjectName/crystalreportviewers13)
copy this below to your web.config
3.1
3.2
3.4 Publish your web application with FTP Mode to your any folder,and copy this publish to your web server then TEST it!