UWP BitmapImage SetSource from MemoryStream hangs

Question

In my UWP app i store images in an SQLite db in form of byte[]. Then as i retrieve my objects from the db i bind them to a GridView data template which has an Image control.

Answer 1

i'll suggest you use the IValueConverter interface before showing the image in your app.

class ImageConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, string language)
    {
        if (value == null || !(value is byte[]))
            return null;
        using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
        {
            using (DataWriter writer = new DataWriter(ms.GetOutputStreamAt(0)))
            {
                writer.WriteBytes((byte[])value);
                writer.StoreAsync().GetResults();
            }
            var image = new BitmapImage();
            image.SetSource(ms);
            return image;
        }
    }

    public object ConvertBack(object value, Type targetType, object parameter, string language)
    {
        throw new NotImplementedException();
    }
}