We have a RadTabStrip controlling a RadMultiPage. In three of the RadPageViews we have a RadGrid. The EditForm of these RadGrids contains ASP RequiredFieldValidators. The problem occurs when the RequiredFieldValidators are not satisfied, the user changes tabs, and tries to navigate away from the page which calls Page.Validate(). The validation errors do not stop RadTab change and are no longer visible. I'm looking for a way to stop that RadTab navigation from occurring when there are ASP.NET Validation errors. (2010.3.1109.35) Thank you.