public static async Task <StorageFile> SaveAsync(this StorageItemThumbnail thumbnail, StorageFolder folder, string name, bool encode = false)
{
using (var stream = thumbnail.CloneStream())
{
var decoder = await BitmapDecoder.CreateAsync(stream);
var softwareBitmap = await decoder.GetSoftwareBitmapAsync();
var filename = name + ".png";
if (encode)
{
filename = WebUtility.UrlEncode(filename);
}
bool notExists = !await folder.Contains(filename);
var file = await folder.CreateFileAsync(filename, CreationCollisionOption.OpenIfExists);
if (notExists)
{
using (var filestream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, filestream);
encoder.SetSoftwareBitmap(softwareBitmap);
await encoder.FlushAsync();
}
}
return(file);
}
}
