WEB API

WEB API

public class CustomerController : ApiController
{
    private OrderMgmtEntities db = new OrderMgmtEntities();

    // GET api/Customer
    public IEnumerable<Customer> GetCustomers()
    {
        return db.Customers.AsEnumerable();
    }

    // GET api/Customer/5
    public Customer GetCustomer(int id)
    {
        Customer customer = db.Customers.Find(id);
        if (customer == null)
        {
            throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.NotFound));
        }

        return customer;
    }

    // PUT api/Customer/5
    public HttpResponseMessage PutCustomer(int id, Customer customer)
    {
        if (ModelState.IsValid && id == customer.CustomerId)
        {
            db.Entry(customer).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                return Request.CreateResponse(HttpStatusCode.NotFound);
            }

            return Request.CreateResponse(HttpStatusCode.OK);
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.BadRequest);
        }
    }

    // POST api/Customer
    public HttpResponseMessage PostCustomer(Customer customer)
    {
        if (ModelState.IsValid)
        {
            db.Customers.Add(customer);
            db.SaveChanges();

            HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, customer);
            response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = customer.CustomerId }));
            return response;
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.BadRequest);
        }
    }

    // DELETE api/Customer/5
    public HttpResponseMessage DeleteCustomer(int id)
    {
        Customer customer = db.Customers.Find(id);
        if (customer == null)
        {
            return Request.CreateResponse(HttpStatusCode.NotFound);
        }

        db.Customers.Remove(customer);

        try
        {
            db.SaveChanges();
        }
        catch (DbUpdateConcurrencyException)
        {
            return Request.CreateResponse(HttpStatusCode.NotFound);
        }

        return Request.CreateResponse(HttpStatusCode.OK, customer);
    }

    protected override void Dispose(bool disposing)
    {
        db.Dispose();
        base.Dispose(disposing);
    }
}

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