//删除
 public static bool Delete(int EmployeeId)
 {
     return(T_EmployeeDAL.Delete(EmployeeId));
 }
 //读取下拉列表
 public static DataTable GetListTable()
 {
     return(T_EmployeeDAL.GetListTable());
 }
 //新增
 public static bool Add(T_Employee emp)
 {
     return(T_EmployeeDAL.Add(emp));
 }
 //读取全部
 public static List <T_Employee> GetList()
 {
     return(T_EmployeeDAL.GetList());
 }