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ivan  
#1 Posted : Monday, March 28, 2011 6:33:41 PM(UTC)
ivan

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C#

Validate Email Address Syntax

Regular expression can be used to validate if an email address is in correct format. For example: you can use this "^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$" pattern to verify if the email address has valid format.

// The following example codes demonstrate testing email address using MX DNS lookup
// To get full sample projects, please download and install EASendMail on your machine.
// To run it correctly, please change SMTP server, user, password, sender, recipient value to yours

Code:

using System; 
using System.Collections.Generic; 
using System.Text; 

// Add EASendMail namespace
using EASendMail; 

namespace mysendemail 
{ 
    class Program 
    { 
        static void Main(string[] args) 
        { 
            SmtpMail oMail = new SmtpMail("TryIt"); 
            SmtpClient oSmtp = new SmtpClient(); 

            // Set sender email address, please change it to yours
            oMail.From = "test@emailarchitect.net"; 

            // Set recipient email address, please change it to yours
            oMail.To = "support@emailarchitect.net"; 

            // Do not set SMTP server address
            SmtpServer oServer = new SmtpServer(""); 

            try 
            { 
                Console.WriteLine("start to test email address ..."); 
                oSmtp.TestRecipients(oServer, oMail); 
                Console.WriteLine("email address was verified!"); 
            } 
            catch (Exception ep) 
            { 
                Console.WriteLine("failed to test email with the following error:"); 
                Console.WriteLine(ep.Message); 
            } 
        } 
    } 
} 

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If you have any comments or questions about above example codes, please add your comments here.
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