private async Task getImageDataAsync(ImageModel image)
{
var url = string.Format(_imageDownloadUrl, image.Image.URL);
//var bytes = await _httpClient.GetByteArrayAsync(url);
//image.Data = bytes;
//var msg = new ImageDownloadCompletedMessage(this, image);
//_messenger.Publish(msg);
var wc = new WebClient();
var tcs = new TaskCompletionSource<byte[]>();
wc.DownloadDataCompleted += (sender, args) => tcs.SetResult(args.Result);
wc.DownloadDataAsync(new Uri(url));
var data = await tcs.Task;
image.Data = data;
}
public async void Load(int start, int count)
{
Loading = true;
LoadingComplete = false;
// now load the stream xml from bing.com
var query = string.Format(_imageFeed, start, count);
var data = await getStringAsync(query);
try
{
var xs = new XmlSerializer(typeof(ImageCollection));
var images = xs.Deserialize(new StringReader(data)) as ImageCollection;
var currentImages = new List<ImageModel>();
foreach (var i in images.Images)
{
var url = string.Format(_imageDownloadUrl, i.URL);
ImageModel image = null;
if (!_images.TryGetValue(url, out image))
{
image = new ImageModel()
{
Image = i,
URL = url,
Description = i.Copyright
};
_images[url] = image;
}
var saved = _favoritedImages.Values.FirstOrDefault(si => si.URL == url);
if (saved != null)
{
image.Data = saved.Data;
}
else getImageDataAsync(image);
currentImages.Add(image);
}
Images = currentImages;
/*
var msg = new AddedImageInfoMessage(this, start, count, currentImages);
_messenger.Publish(msg);
* */
}
catch (Exception ex)
{
}
Loading = false;
LoadingComplete = true;
if (OnLoadingComplete != null) OnLoadingComplete();
}
