protected void cuvEmail_ServerValidate(object source, ServerValidateEventArgs args)
{
if (Page.IsValid) // other client-side validation passed
{
Tutor objTutor = new Tutor();
if (objTutor.isEmailExist(txtEmail.Text) == true)
args.IsValid = false; // Raise error
else
args.IsValid = true; // No error
}
}
