In this blog we will know how to validate email address in Csharp.
<%@
Page Language="C#"
AutoEventWireup="true"
CodeBehind="Default.aspx.cs"
Inherits="Email_validation._Default"
%>
<!DOCTYPE
html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html
xmlns="http://www.w3.org/1999/xhtml"
>
<head
runat="server">
<title>Untitled
Page</title>
</head>
<body>
<form
id="form1"
runat="server">
<div>
<asp:TextBox
runat="server"
ID="txtemail"></asp:TextBox><br
/>
<asp:Button
runat="server"
ID="Validate"
Text="Validate Email id"
onclick="Validate_Click"
/>
<asp:Label
ID="lbl_message"
runat="server"
Font-Bold="True"
ForeColor="#CC3300"></asp:Label>
</div>
</form>
</body>
</html>
using
System;
using
System.Collections;
using
System.Configuration;
using
System.Data;
using
System.Linq;
using
System.Web;
using
System.Web.Security;
using
System.Web.UI;
using
System.Web.UI.HtmlControls;
using
System.Web.UI.WebControls;
using
System.Web.UI.WebControls.WebParts;
using
System.Xml.Linq;
using
System.Text.RegularExpressions;
namespace
Email_validation
{
public partial
class _Default
: System.Web.UI.Page
{
private void
ValidateEmail()
{
string email = txtemail.Text;
Regex regex =
new Regex(@"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$");
Match match = regex.Match(email);
if (match.Success)
lbl_message.Text=email + " is Valid
Email Address";
else
lbl_message.Text = email + "
is Invalid Email Address";
}
protected void
Validate_Click(object sender,
EventArgs e)
{
ValidateEmail();
}
}
}