Hi Saroj,

I'm afraid I don't understand your question. Typically, what you would do is use some sort of flag to track when something has changed. There's no way to do this in a global way, you would have to track it by handling events on each control and trapping any events that might cause something to change. Then when the form is closed, you would show a message to your users.

It really doesn't have anything specifically to do with the Infragistics controls. So I don't know what you are asking.