- BitmapImage to byte array conversion.
- Creation of temporary StorageFile.
- Writing byte array data on empty storage file.
BitmapImage bitmap = ImageBoxPreview.Source as BitmapImage;
RandomAccessStreamReference rasr = RandomAccessStreamReference.CreateFromUri(bitmap.UriSource);
var streamWithContent = await rasr.OpenReadAsync();
byte[] buffer = new byte[streamWithContent.Size];
await streamWithContent.ReadAsync(buffer.AsBuffer(),(uint)streamWithContent.Size, InputStreamOptions.None);
Creation of temporary StorageFile
StorageFile file = await ApplicationData.Current.LocalFolder.CreateFileAsync("temp.jpeg", CreationCollisionOption.ReplaceExisting);
Writing byte array data on empty storage file
using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
using (IOutputStream outputStream = fileStream.GetOutputStreamAt(0))
{
using (DataWriter dataWriter = new DataWriter(outputStream))
{
dataWriter.WriteBytes(buffer);
await dataWriter.StoreAsync(); //
dataWriter.DetachStream();
}
// write data on the empty file:
outputStream.FlushAsync();
}
fileStream.FlushAsync();
}
Complete code will be:
