public bool InsertEmail(tblEmail email)
 {
     if(email.Sender!="" && email.Email!="" && email.Title!="" && email.Content!="")
         return _da.InsertEmail(email);
     return false;
 }
 public bool InsertEmail(tblEmail email)
 {
     if (email != null && email.ID != null && !email.ID.Equals(Guid.Empty))
     {
         _dataContext.tblEmails.InsertOnSubmit(email);
         _dataContext.SubmitChanges();
         return true;
     }
     return false;
 }
 partial void UpdatetblEmail(tblEmail instance);
 partial void DeletetblEmail(tblEmail instance);
 partial void InserttblEmail(tblEmail instance);