c# email validation with if statement

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C#

how do you make sure there is atleast two characters between the @ and the . character

Posted 8-Nov-12 12:50pm

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Nelek 8-Nov-12 19:23pm

Why are you reposting the question?
How do you make sure there are at least two characters between the @ character abd the . character.[^]

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Al Moje · Answer 1 · 2012-11-08T13:54:00

Hi,

Example:

C#

string emailAddr = "MyEmail@live.com";
bool isValid = IsEMailAddrValid(emailAddr);
if (isValid)
{
  // popup message box?
}
// Do anything ?

C#

private bool IsEMailAddrValid(string emailAddr)
{
   bool result = true;
   int count = emailAddr.Count(f => f == '@');
   if (count == 0)
   {
       return false;
   }
   if (count > 1)
   {
      return false;
   }
   count = emailAddr.Count(f => f == '.');
   if (count == 0)
   {
      return false;
   }
   if (count > 1)
   {
      return false;
   }
   string theChar = emailAddr.Split('@')[1].ToString();
   int theCharLen = theChar.Split('.')[0].ToString().Length;
   if (theCharLen < 2)
   {
      result = false;
   }
   return result;
}

Regards,

Ahmedwaheed · Answer 2 · 2012-11-08T13:18:00

use this class

C#

using System.Text.RegularExpressions;

public static class Validator
{

    static Regex ValidEmailRegex = CreateValidEmailRegex();

    /// <summary>
    /// Taken from http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx
    /// </summary>
    /// <returns></returns>
    private static Regex CreateValidEmailRegex()
    {
        string validEmailPattern = @"^(?!\.)(""([^""\r\\]|\\[""\r\\])*""|"
            + @"([-a-z0-9!#$%&'*+/=?^_`{|}~]|(?<!\.)\.)*)(?<!\.)"
            + @"@[a-z0-9][\w\.-]*[a-z0-9]\.[a-z][a-z\.]*[a-z]$";

        return new Regex(validEmailPattern, RegexOptions.IgnoreCase);
    }

    internal static bool EmailIsValid(string emailAddress)
    {
        bool isValid = ValidEmailRegex.IsMatch(emailAddress);

        return isValid;
    }
}

c# email validation with if statement

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