public static void DownloadCaptchaImage(string website, Action <ImageResource, string> onSuccess)
{
using (WebClient client = new WebClient())
{
ResourceManager resource = Core.Instance.ResourceManager;
resource.DownloadString(website + "captcha/captcha.ashx",
delegate(IResourceObject res)
{
StringResource str = (StringResource)res;
// download the image
resource.DownloadImage(website + "captcha/getcaptcha.ashx?CaptchaID=" + str.String,
delegate(IResourceObject nres)
{
if (onSuccess != null)
{
onSuccess((ImageResource)nres, str.String);
}
}, null);
}, null);
}
}
private void update()
{
lock (locker)
{
try
{
startQueued();
for (int i = 0; i < downloading.Count; i++)
{
var down = downloading[i];
switch (down.dtype)
{
case LoadType.File:
{
Task task = down.Task;
IResourceObject res = null;
if (task.Status == TaskStatus.RanToCompletion)
{
switch (down.type)
{
case ResourceType.Image:
#if ANDROID
Task <Bitmap> t = (Task <Bitmap>)task;
res = new ImageResource(t.Result);
#elif IOS
Task <UIImage> t = (Task <UIImage>)task;
res = new ImageResource(t.Result);
#else
throw new NotImplementedException();
#endif
if (down.store)
{
resources.Add(down.path.OriginalString, res);
}
downloading.RemoveAt(i);
i--;
for (int j = 0; j < down.Callbacks.Count; j++)
{
Delegate del = (Delegate)down.Callbacks[j];
del.DynamicInvoke(res);
//down.Callbacks[j](res);
}
break;
}
}
}
break;
case LoadType.Download:
{
down.client.Dispose();
var task = (Task <byte[]>)down.Task;
if (task.Status == TaskStatus.RanToCompletion)
{
// success
IResourceObject res = null;
switch (down.type)
{
case ResourceType.Image:
res = new ImageResource(task.Result);
if (task.Result.Length < 10)
{
// decode error
string error = WebUtil.GetASCIIString(task.Result);
continue;
}
break;
case ResourceType.String:
res = new StringResource(task.Result);
break;
}
if (down.store)
{
resources.Add(down.path.OriginalString, res);
}
downloading.RemoveAt(i);
i--;
for (int j = 0; j < down.Callbacks.Count; j++)
{
Delegate del = (Delegate)down.Callbacks[j];
del.DynamicInvoke(res);
//down.Callbacks[j](res);
}
}
else if (task.Status == TaskStatus.Canceled ||
task.Status == TaskStatus.Faulted)
{
// failure
downloading.RemoveAt(i);
i--;
for (int j = 0; j < down.failureCallbacks.Count; j++)
{
down.failureCallbacks[j]();
}
}
}
break;
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
if (ex is WebException)
{
WebException web = (WebException)ex;
using (Stream stream = web.Response.GetResponseStream())
{
StreamReader reader = new StreamReader(stream);
string data = reader.ReadToEnd();
}
}
}
}
}