public void BeginGetCustomerServiceData(int id, GetCustomerServiceCallback callback)
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(
new Uri(serverBaseUri, relativeGetCustomerServiceDataURI));
request.Method = "POST";
getCustomerServiceCallback = callback;
request.BeginGetRequestStream(delegate(IAsyncResult result)
{
HttpWebRequest webRequest = result.AsyncState as HttpWebRequest;
webRequest.ContentType = "text/xml";
Stream requestStream = webRequest.EndGetRequestStream(result);
StreamWriter streamWriter = new StreamWriter(requestStream);
// Serializa los datos a enviar.
DataContractSerializer serializer = new DataContractSerializer(typeof(int));
serializer.WriteObject(streamWriter.BaseStream, id);
streamWriter.Close();
// Realizar una llamada asíncrona para obtener la respuesta.
// Un Callback será invocado sobre un hilo ejecutándose en segundo plano.
request.BeginGetResponse(new AsyncCallback(EndGetCustomerServiceData), request);
}
, request);
}
public void EndGetCustomerServiceData(System.IAsyncResult result)
{
GetCustomerServiceResult callResult = new GetCustomerServiceResult();
try
{
HttpWebRequest request = (HttpWebRequest)result.AsyncState;
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(result);
// Crear la instancia del deserializador.
DataContractSerializer serializer = new DataContractSerializer(typeof(CustomerServiceDataEntity));
// Deserializar el modelo de datos.
CustomerServiceDataEntity deserializedCustomerService = (CustomerServiceDataEntity)serializer.ReadObject(response.GetResponseStream());
callResult.CustomerService = deserializedCustomerService;
}
catch (SerializationException serializationError)
{
Debug.WriteLine(serializationError.Message);
}
catch (WebException webError)
{
Debug.WriteLine(webError.Message);
}
// Si hay callback, invocarlo.
if (getCustomerServiceCallback != null)
{
getCustomerServiceCallback(callResult);
getCustomerServiceCallback = null;
}
}
