public HttpResponseMessage Put(int id, [FromUri] Employee employee)
        {
            try
            {
                using (EKoperasiEntities entities = new EKoperasiEntities())
                {
                    var entity = entities.Employees.FirstOrDefault(e => e.ID == id);

                    if (entity == null)
                    {
                        return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "Employee with Id = " + id.ToString() + " not found to update"));
                    }
                    else
                    {
                        entity.FirstName = employee.FirstName;
                        entity.LastName  = employee.LastName;
                        entity.Salary    = employee.Salary;

                        entities.SaveChanges();
                        return(Request.CreateResponse(HttpStatusCode.OK, entity));
                    }
                }
            }
            catch (Exception ex)
            {
                return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex));
            }
        }
        public HttpResponseMessage LoadEmployeeById(int id)
        {
            using (EKoperasiEntities entities = new EKoperasiEntities())
            {
                var entity = entities.Employees.FirstOrDefault(e => e.ID == id);

                if (entity != null)
                {
                    return(Request.CreateResponse(HttpStatusCode.OK, entity));
                }
                else
                {
                    return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "Employee with Id = " + id.ToString() + " not found"));
                }
            }
        }
        public HttpResponseMessage Post([FromBody] Employee employee)
        {
            try
            {
                using (EKoperasiEntities entities = new EKoperasiEntities())
                {
                    entities.Employees.Add(employee);
                    entities.SaveChanges();

                    var message = Request.CreateResponse(HttpStatusCode.Created, employee);
                    message.Headers.Location = new Uri(Request.RequestUri + employee.ID.ToString());
                    return(message);
                }
            }
            catch (Exception ex)
            {
                return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex));
            }
        }
        public HttpResponseMessage Get(string lastname = "All")
        {
            using (EKoperasiEntities entities = new EKoperasiEntities())
            {
                switch (lastname.ToLower())
                {
                case "all":
                    return(Request.CreateResponse(HttpStatusCode.OK, entities.Employees.ToList()));

                case "wahyu":
                    return(Request.CreateResponse(HttpStatusCode.OK,
                                                  entities.Employees.Where(e => e.LastName.ToLower() == "wahyu").ToList()));

                case "cahyani":
                    return(Request.CreateResponse(HttpStatusCode.OK,
                                                  entities.Employees.Where(e => e.LastName.ToLower() == "cahyani").ToList()));

                default:
                    return(Request.CreateErrorResponse(HttpStatusCode.BadRequest,
                                                       "Value for lastname must be All, Wahyu or Cahyani." + lastname + " is invalid"));
                }
            }
        }
 public HttpResponseMessage Delete(int id)
 {
     using (EKoperasiEntities entities = new EKoperasiEntities())
     {
         try
         {
             var entity = entities.Employees.FirstOrDefault(e => e.ID == id);
             if (entity == null)
             {
                 return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "Employee with Id = " + id.ToString() + " not found to delete"));
             }
             else
             {
                 entities.Employees.Remove(entity);
                 entities.SaveChanges();
                 return(Request.CreateResponse(HttpStatusCode.OK));
             }
         }
         catch (Exception ex)
         {
             return(Request.CreateResponse(HttpStatusCode.BadRequest, ex));
         }
     }
 }