public override IAsyncOperation <IDictionary <string, object> > RetrievePropertiesAsync(IEnumerable <string> propertiesToRetrieve)
{
return(AsyncInfo.Run <IDictionary <string, object> >(async(cancellationToken) =>
{
var props = new Dictionary <string, object>();
propertiesToRetrieve.ForEach(x => props[x] = null);
// Fill common poperties
var ret = item.AsBaseStorageFile()?.GetBasicPropertiesAsync() ?? item.AsBaseStorageFolder()?.GetBasicPropertiesAsync();
var basicProps = ret != null ? await ret : null;
props["System.ItemPathDisplay"] = item?.Path;
props["System.DateCreated"] = basicProps?.ItemDate;
props["System.DateModified"] = basicProps?.DateModified;
return props;
}));
}
public static async Task <byte[]> LoadIconFromStorageItemAsync(IStorageItem item, uint thumbnailSize, ThumbnailMode thumbnailMode)
{
if (item.IsOfType(StorageItemTypes.File))
{
using var thumbnail = (StorageItemThumbnail) await FilesystemTasks.Wrap(
() => item.AsBaseStorageFile ().GetThumbnailAsync (thumbnailMode, thumbnailSize, ThumbnailOptions.ResizeThumbnail).AsTask());
if (thumbnail != null)
{
return(await thumbnail.ToByteArrayAsync());
}
}
else if (item.IsOfType(StorageItemTypes.Folder))
{
using var thumbnail = (StorageItemThumbnail) await FilesystemTasks.Wrap(
() => item.AsBaseStorageFolder ().GetThumbnailAsync (thumbnailMode, thumbnailSize, ThumbnailOptions.ResizeThumbnail).AsTask());
if (thumbnail != null)
{
return(await thumbnail.ToByteArrayAsync());
}
}
return(null);
}
