public AsyncContext(Delegate @delegate, DelegateAsyncResult delegateAsyncResult, AsyncCallback asyncCallback, object userState)
{
AsyncDelegate = @delegate;
AsyncCallback = asyncCallback;
AsyncState = userState;
DelegateAsyncResult = delegateAsyncResult;
}
public override IAsyncResult BeginGetResponse(AsyncCallback callback, object state)
{
GetResponseDelegate d = new GetResponseDelegate(GetAsyncResponse);
DelegateAsyncResult result = new DelegateAsyncResult();
AsyncContext userContext = new AsyncContext(d, result, callback, state);
result.AsyncResult = d.BeginInvoke(new AsyncCallback(DelegateAsyncResult.Callback), userContext);
return(result);
}
public override WebResponse EndGetResponse(IAsyncResult asyncResult)
{
if (_isAborted)
{
throw new WebException("The operation has been aborted.", WebExceptionStatus.RequestCanceled);
}
if (asyncResult == null)
{
throw new ArgumentNullException("asyncResult");
}
DelegateAsyncResult result = asyncResult as DelegateAsyncResult;
if (result == null)
{
throw new ArgumentException("Invalid IAsyncResult", "asyncResult");
}
return(((GetResponseDelegate)result.AsyncDelegate).EndInvoke(result.AsyncResult));
}
