private static void ProcessTransfer(PendingRequest pendingRequest)
{
if (pendingRequest == null || pendingRequest.Uri == null)
{
return;
}
try
{
if (pendingRequest.Uri.IsAbsoluteUri)
{
_iso.GetItem(pendingRequest.Uri, (img, exc, stat) =>
{
if (stat == IsoStoreCache.ItemCacheStatus.Hit)
{
var ms = new MemoryStream(img);
var pc = new PendingCompletion(pendingRequest.Image, pendingRequest.Uri, ms);
PriorityQueue.AddUiWorkItem(() =>
{
HandleCompletion(pc);
});
}
else
{
// Download from network
var webRequest = HttpWebRequest.CreateHttp(pendingRequest.Uri);
webRequest.AllowReadStreamBuffering = true; // Don't want to block this thread or the UI thread on network access
webRequest.BeginGetResponse(HandleGetResponseResult, new ResponseState(webRequest, pendingRequest.Image, pendingRequest.Uri));
}
});
}
else
{
// Load from application (must have "Build Action"="Content")
var originalUriString = pendingRequest.Uri.OriginalString;
// Trim leading '/' to avoid problems
var resourceStreamUri = originalUriString.StartsWith("/", StringComparison.Ordinal) ? new Uri(originalUriString.TrimStart('/'), UriKind.Relative) : pendingRequest.Uri;
// Enqueue resource stream for completion
var streamResourceInfo = Application.GetResourceStream(resourceStreamUri);
if (null != streamResourceInfo)
{
var pc = new PendingCompletion(pendingRequest.Image, pendingRequest.Uri, streamResourceInfo.Stream);
PriorityQueue.AddUiWorkItem(() =>
{
HandleCompletion(pc);
});
}
}
}
catch (NullReferenceException)
{
// Trying to address user-found bugs here.
}
}
