<%@ Page Language="VB" %> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Validation Groups</title> </head> <body> <form id="form1" runat="server"> <div> <h1>St. Louis .NET User Group</h1> Username: <asp:TextBox ID="TextBox1" Runat="server"></asp:TextBox> Password: <asp:TextBox ID="TextBox2" Runat="server" TextMode="Password"></asp:TextBox> <asp:Button ID="Button1" Runat="server" Text="Login" ValidationGroup="Login" /> <br /> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" Runat="server" ErrorMessage="* You must submit a username!" ControlToValidate="TextBox1" ValidationGroup="Login"> </asp:RequiredFieldValidator> <br /> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" Runat="server" ErrorMessage="* You must submit a password!" ControlToValidate="TextBox2" ValidationGroup="Login"> </asp:RequiredFieldValidator> <h2>Sign-up for the newsletter!</h2> Email: <asp:TextBox ID="TextBox3" Runat="server"></asp:TextBox> <asp:Button ID="Button2" Runat="server" Text="Sign-up" ValidationGroup="Newsletter" /> <br /> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" Runat="server" ErrorMessage="* You must submit a correctly formatted email address!" ControlToValidate="TextBox3" ValidationGroup="Newsletter" ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"> </asp:RegularExpressionValidator> <br /> <asp:RequiredFieldValidator ID="RequiredFieldValidator3" Runat="server" ErrorMessage="* You forgot your email address!" ControlToValidate="TextBox3" ValidationGroup="Newsletter"> </asp:RequiredFieldValidator> </div> </form> </body> </html>