I am working on some new C# asp.net 2010 webforms. I am using the validator controls to make certain the user enters required data accurately. I have heard that we should be using args.IsValid in the controls. However, I do not know how to 'write this up'. Can you point me to examples of how I can make my four controls use args.IsValid? I also would like an example of what I check when this value is false.