Step 1: type the following reference in above your class form
using System.Text.RegularExpressions;
Step 2: Insert the following method in your application.
public bool ValidateEmail(string sEmail)
{
Regex exp = new Regex(@"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*");
Match m = exp.Match(sEmail);
if (m.Success && m.Value.Equals(sEmail))
{
return true;
}
else
{
return false;
}
}
Step 3 : Call above method in any pace you want .
if (ValidateEmail(textBox2.Text) == true)
{
MessageBox.Show("valid mail");
}
else { MessageBox.Show("not valid mail"); }
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