partial void DeleteEmployee(Employee instance);
 partial void UpdateEmployee(Employee instance);
 private void detach_Employees(Employee entity)
 {
     this.SendPropertyChanging();
     entity.Employee1 = null;
 }
 partial void InsertEmployee(Employee instance);
 private void attach_Employees(Employee entity)
 {
     this.SendPropertyChanging();
     entity.Employee1 = this;
 }