private void alertImageListView_RightTapped(object sender, RightTappedRoutedEventArgs e)
{
if (e.OriginalSource is Image image)
{
SelectedImage = image.DataContext as AlertDisplayImageModel;
}
}
public static async void SaveImage(AlertDisplayImageModel SelectedAlertImage)
{
if (SelectedAlertImage != null)
{
FileSavePicker picker = new FileSavePicker();
picker.FileTypeChoices.Add("PNG File", new List <string> {
".png"
});
StorageFile destFile = await picker.PickSaveFileAsync();
if (destFile != null)
{
using (IRandomAccessStream stream = await destFile.OpenAsync(FileAccessMode.ReadWrite))
{
BitmapEncoder encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, stream);
Stream pixelStream = SelectedAlertImage.AlertDisplayImage.PixelBuffer.AsStream();
byte[] pixels = new byte[pixelStream.Length];
await pixelStream.ReadAsync(pixels, 0, pixels.Length);
encoder.SetPixelData(BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)SelectedAlertImage.AlertDisplayImage.PixelWidth,
(uint)SelectedAlertImage.AlertDisplayImage.PixelHeight,
96.0,
96.0,
pixels);
await encoder.FlushAsync();
}
}
}
}
