//------------------------------PUT Method----------------------------------
 public HttpResponseMessage Put(int id, [FromBody] Employee employee)
 {
     try
     {
         using (EmployeeAPIEntities entities = new EmployeeAPIEntities())
         {
             var entity = entities.Employees.FirstOrDefault(e => e.ID == id);
             if (entity == null)
             {
                 return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "Employee With ID " + id.ToString() + "Not Found"));
             }
             else
             {
                 entity.FirstName = employee.FirstName;
                 entity.Lastname  = employee.Lastname;
                 entity.Gender    = employee.Gender;
                 entity.Salary    = employee.Salary;
                 entities.SaveChanges();
                 return(Request.CreateResponse(HttpStatusCode.OK, "Updated Successfully"));
             }
         }
     }
     catch (Exception ex)
     {
         return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex));
     }
 }
 //-> Post data to the server
 public HttpResponseMessage Post([FromBody] Employee employee)
 {
     try {
         using (EmployeeAPIEntities entites = new EmployeeAPIEntities())
         {
             entites.Employees.Add(employee);
             entites.SaveChanges();
             var message = Request.CreateErrorResponse(HttpStatusCode.Created, employee.ToString());
             message.Headers.Location =
                 new Uri(Request.RequestUri + employee.ID.ToString());
             return(message);
         }
     }
     catch (Exception ex)
     {
         return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex));
     }
 }
 //---------------------------------------Post Delete Method------------------------------------------------
 public HttpResponseMessage Delete(int id)
 {
     try {
         using (EmployeeAPIEntities entities = new EmployeeAPIEntities())
         {
             var entity = entities.Employees.FirstOrDefault(e => e.ID == id);
             if (entity == null)
             {
                 return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "Employee with id= " + id.ToString() + " Not Found"));
             }
             else
             {
                 entities.Employees.Remove(entity);
                 entities.SaveChanges();
                 return(Request.CreateResponse(HttpStatusCode.OK, "Done Succesfully"));
             }
         }
     }
     catch (Exception ex)
     {
         return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex));
     }
 }