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Categories / ASP.Net Tutorial / Validation
 

Making sure the text-box value is an e-mail address

<%@ Page Language="VB" %> <script runat="server">     Protected Sub Button1_Click(sender As Object, e As EventArgs)        Label1.Text = "Passwords match"     End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">     <title>CompareFieldValidator</title> </head> <body>     <form id="Form1" runat="server">         Email:         <asp:TextBox ID="TextBox1" Runat="server"></asp:TextBox>         <asp:RegularExpressionValidator ID="RegularExpressionValidator1"                                         Runat="server"                                          ControlToValidate="TextBox1"                                         ErrorMessage="You must enter an email address"                                         ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*">         </asp:RegularExpressionValidator>                      <asp:Button ID="Button1" OnClick="Button1_Click"               Runat="server" Text="Login"></asp:Button>                      <asp:Label ID="Label1" Runat="server"></asp:Label>              </form> </body> </html>