How to validate email address for specified domain name using regular expression in asp.net
In this article, we will protect to textbox to take
the gmail, yahoo and Hotmail email id .Many time we need to protect the
specified the domain name to enter . in this example .we can choose the all
email id address rather than gmail, yahoo and Hotmail .for this:- we have taken the asp.net regular expression validator to validate this code just using
the below code:-
ValidationExpression="^([\w-\.]+@(?!gmail.com)(?!yahoo.com)(?!hotmail.com)([\w-]+\.)+[\w-]{2,4})?$"
Design:-
Source
Code:-
<%@
Page Language="C#" AutoEventWireup="true" CodeFile="emailvalidation.aspx.cs"
Inherits="emailvalidation" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<fieldset style="width: 600px">
<legend><strong>Protect
email address for specified domain name(gmail, yahoo and hotmail) </strong></legend>
<br />
<strong>Email
Address</strong>
<asp:TextBox ID="txtemail" runat="server" Width="200px"></asp:TextBox>
<asp:RegularExpressionValidator ID="REVemail" runat="server"
ControlToValidate="txtemail" Display="Dynamic"
ErrorMessage="Please enter the valid email" ForeColor="Red"
ValidationExpression="^([\w-\.]+@(?!gmail.com)(?!yahoo.com)(?!hotmail.com)([\w-]+\.)+[\w-]{2,4})?$"></asp:RegularExpressionValidator>
</fieldset>
</div>
</form>
</body>
</html>
Output:-
How to validate email address for specified domain name using regular expression in asp.net
Reviewed by NEERAJ SRIVASTAVA
on
8:03:00 PM
Rating:
Reviewed by NEERAJ SRIVASTAVA
on
8:03:00 PM
Rating:
nice
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