I am using Multiview control for displaying tab on my page . here I am writing the code for validation of each tab on my page I have menu item control as well( i.e TabMenu) to display the tab. on clicking the tab it will validate the current tab protected void TabMenu_MenuItemClick(object sender, MenuEventArgs e) { int nextTabIndex = Int32.Parse(e.Item.Value); // here TabMultiView is my multiview control for (int index = 0; index < TabMultiView.Views.Count; index++) { TabMultiView.ActiveViewIndex = index; if (index != nextTabIndex) { // here ValidationGroup is the name of validationgroup in my validation control ex: <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="Login_x0020_Name" ValidationGroup="ValidationGroup" ErrorMessage="Enter Value"></asp:RequiredFieldValidator> Page.Validate("ValidationGroup"); if (!Page.IsValid) { return; } } } } its working perfect if you have any query regarding this blog please let me know.. Cheers Guys.... Life to Set Hai Boss....... Shukraj Khadse Software Engg Datamatics Global Services Andheri, Mumbai