public IEnumerable <FBQueryResult> EndQuery(IAsyncResult result)
{
if (!result.IsCompleted)
{
result.AsyncWaitHandle.WaitOne();
}
FBResult fbResult = result as FBResult;
if (fbResult == null)
{
throw new ArgumentException(InvalidAsyncResult, "result");
}
WebRequest req = fbResult.InnerResult.AsyncState as WebRequest;
if (req == null)
{
throw new ArgumentException(InvalidAsyncResult, "result");
}
JObject jObject = null;
using (WebResponse resp = req.EndGetResponse(fbResult.InnerResult))
using (Stream stream = resp.GetResponseStream())
using (StreamReader reader = new StreamReader(stream))
{
string json = reader.ReadToEnd();
jObject = JObject.Parse(json);
}
var errors = jObject["error"] as JObject;
if (errors != null)
{
throw new ApplicationException(
String.Format(
"Facebook Graph service errors were returned: message: {0}; type: {1}; code: {2}",
(string)errors["message"],
(string)errors["type"],
(int)errors["code"]));
}
var data = jObject["data"] as JArray;
if (data != null)
{
foreach (var queryResult in data)
{
var jobjResult = queryResult as JObject;
yield return(new FBQueryResult(jobjResult));
}
}
else
{
yield return(new FBQueryResult(jObject));
}
}
public IAsyncResult BeginQuery(string entity, string query, AsyncCallback callback, object state)
{
string uri = ConstructQueryUri(entity, query);
WebRequest req = WebRequest.Create(uri);
FBResult fbResult = new FBResult(state);
fbResult.InnerResult = req.BeginGetResponse(
(result) =>
{
if (callback != null)
callback(fbResult);
},
req);
return fbResult;
}
public IAsyncResult BeginQuery(string entity, string query, AsyncCallback callback, object state)
{
string uri = ConstructQueryUri(entity, query);
WebRequest req = WebRequest.Create(uri);
FBResult fbResult = new FBResult(state);
fbResult.InnerResult = req.BeginGetResponse(
(result) =>
{
if (callback != null)
{
callback(fbResult);
}
},
req);
return(fbResult);
}
