Report viewer not showing the result if the page is not edited. Even it not showing any error. It takes the parameter value.
not displaying the report. If we click the edit page option it showing the result. after that no issue.
The following link helped me to solve my problem.
Microsoft is conducting an online survey to understand your opinion of the Msdn Web site. If you choose to participate, the online survey will be presented to you when you leave the Msdn Web site.
Would you like to participate?