public static IAsyncResult GetImageryMetadataAsync(ImageryMetadataRequest imageryRequest, Action <Response> clientCallback, Action <Exception> clientErrorCallback)
{
HttpWebRequest httpWebRequest = WebRequest.Create(imageryRequest.GetRequestUrl()) as HttpWebRequest;
InternalAsyncRequestState state = new InternalAsyncRequestState
{
Request = httpWebRequest,
ResponseCallBack = clientCallback,
ErrorCallBack = clientErrorCallback
};
return(httpWebRequest.BeginGetResponse(RespCallback, state));
}
private static void RespCallback(IAsyncResult asynchronousResult)
{
InternalAsyncRequestState internalAsyncRequestState = (InternalAsyncRequestState)asynchronousResult.AsyncState;
try
{
Response response = ReadResponse((HttpWebResponse)internalAsyncRequestState.Request.EndGetResponse(asynchronousResult));
if (response != null)
{
internalAsyncRequestState.ResponseCallBack(response);
}
else
{
internalAsyncRequestState.ErrorCallBack(new Exception("Error parsing Bing Maps Response"));
}
}
catch (WebException obj)
{
internalAsyncRequestState.ErrorCallBack(obj);
}
}
