How to validate Email Address Web Form in C#.NET

Hello,

You can use Regular expression: \b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b

or you can use the in-build validations of C#.Net, you can find it under:
Toolbox -> Validation -> RegularExpressionValidator


-AJV King
(Vinco Source)

try this

//programmatically verify
http://www.c-sharpcorner.com/uploadfile/40e97e/verify-email-online/

or

Email Address Validation Using Regular Expression

http://www.codeproject.com/Articles/5189/Effective-Email-Address-Validation

Try this:

void EmailValidation(object sender, CancelEventArgs e)
       {
           System.Text.RegularExpressions.Regex rEMail = new System.Text.RegularExpressions.Regex(@"^[a-zA-Z][\w\.-]{0,68}[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$");
           if (txtEmail.Text.Length > 0)
           {
               if (!rEMail.IsMatch(txtEmail.Text))
               {
                   MessageBox.Show("Invalid e-mail id.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                   txtEmail.SelectAll();
                   e.Cancel = true;
               }
           }
       }

Hello,


Check this out.


Email ID Validation[^]

public static bool isEmail(string inputEmail)
{
   inputEmail  = NulltoString(inputEmail);
   string strRegex = @"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}" +
         @"\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\" + 
         @".)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";
   Regex re = new Regex(strRegex);
   if (re.IsMatch(inputEmail))
    return (true);
   else
    return (false);
}

You can also see
Email Validation

Do you have any knowledge about regular expression?
You can follow this page for details in regular expression.
You can validate any thing using regular expression.

http://www.regular-expressions.info/[^]

Go through this site and if have any problem using this and you can ask me freely.

You can use this direct link to example

http://www.regular-expressions.info/tutorial.html[^]