public bool Add(clsEmployee emp)
 {
     if (Exist(emp.myEmployee.Id) == false)
     {
         myEmpList.Add(emp.myEmployee.Id, emp);
         return(true);
     }
     else
     {
         return(false);
     }
 }
 public clsEmployee Update(string EmpId, clsEmployee emp)
 {
     return(myEmpList[EmpId] = emp);
 }