grid view control

Question

I am developing a website(File system), in that I am using a grid view control. In the code behind file, I am using gridview control's rowDeleting event. When the user clicks delete button , I am displaying a messagebox asking whether to delete or not. When I am running from source it works fine.

But after publishing my website, from the published pages, when I click the delete button, I am getting the following error.

"showing a model dialog box or form when the application is not running in user interactive mode is not a valid operation. Specify the serviceNotification or DefaultDesktopOnly Style to display a notification from a service application."

How can I resolve this problem?

thank u all,
kiran