/// <summary>
/// Saves the cropped image to a stream with the specified format.
/// </summary>
/// <param name="stream">The target stream.</param>
/// <param name="bitmapFileFormat">the specified format.</param>
/// <returns>Task</returns>
public async Task SaveAsync(IRandomAccessStream stream, BitmapFileFormat bitmapFileFormat)
{
if (SourceImage == null)
{
return;
}
var bitmapEncoder = await BitmapEncoder.CreateAsync(WriteableBitmapExtensions.GetEncoderId(bitmapFileFormat), stream);
await WriteableBitmapExtensions.CropImageAsync(SourceImage, _currentCroppedRect, bitmapEncoder);
}