public static void CreateEmployee(string firstName, string lastName, int age, string email,
                                          int specialityId, int positionid)
        {
            //EmployeeModel data = new EmployeeModel
            //{
            //    FirstName = firstName,
            //    LastName = lastName,
            //    Age = age,
            //    Email = email,
            //    SpecialityId = specialityId,
            //    PositionId = positionid
            //};
            DBDepartmnetEntities model    = new DBDepartmnetEntities();
            Employee             employee = new Employee();

            employee.FirstName    = firstName;
            employee.LastName     = lastName;
            employee.Age          = age;
            employee.Email        = email;
            employee.SpecialityId = specialityId;
            employee.PositionId   = positionid;
            model.Employee.Add(employee);
            model.SaveChanges();
            //string sql= @"insert into dbo.Employee (FirstName,LastName,Age,Email,SpecialityId,PositionId) values(
            //@FirstName,@LastName,@Age,@Email,@SpecialityId,@PositionId)";
            //return SQLDataAccess.SaveData(sql, employee);
        }
 public static void DeleteEmployees(DBDepartmnetEntities models)
 {
     string sql = @"DELETE FROM dbo.Employee WHERE Id = @Id";
 }