Validating Email using regular expressions in C#

 
using System.Text;
using System.Text.RegularExpressions;

string text = Console.ReadLine();
string reg = @"^((([\w]+\.[\w]+)+)|([\w]+))@(([\w]+\.)+)([A-Za-z]{1,3})$";

if (Regex.IsMatch(text, reg))
{
     Console.WriteLine("Email."); 
}
else
{
     Console.WriteLine("Not email."); 
}

Output:
sakfkgfc@kfseg.cic
Email
asfllsfcn
Not Email