Dear friends,I have a textbox that I want to validate. I added a custom control that checks validity of the textbox's content. And I have a button, say, "Process". When I click the button, the execution comes to the server validation function, and e.IsValid is set to false. In this case I expect the process not to go further, but it does, as if validation never happened.What am I doing wrong? <asp:TextBox ID="txtFilterValue" runat="server"></asp:TextBox> <asp:CustomValidator ID="CustomError" runat="server" onservervalidate="Custom_ServerValidate" ControlToValidate="txtFilterValue" ErrorMessage="Populated Dynamically" ValidateEmptyText="True">*</asp:CustomValidator>