RadPanelBar provides a built in ASP.NET validation. The menu can trigger validation of other controls on the form when it performs a post-back to the server.
By default, all validators on the Web page must be successful before the postback can occur. You can assign a group name to a set of validators to ensure that validation occurs only for controls in the specified group. This enables you to have multiple separately-validated forms on a single page. You can use the ValidationGroup property when you want to perform separate validation tasks on the same page.
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