public bool CreateEmployee(string EmployeeName, string EmployeeTypeID, string PhoneNumber, string IdentityCard, string PassWord)
 {
     try
     {
         HotelManagementDataContext db = new HotelManagementDataContext();
         db.sp_CreateEmployees(EmployeeName, Convert.ToByte(EmployeeTypeID), PhoneNumber, IdentityCard, PassWord);
         db.Employees.Context.SubmitChanges();
         return(true);
     }
     catch
     {
         return(false);
     }
 }