Load bitmapImage from base64String

bitmapimage, c#, microsoft-metro, windows-8

Solution

To create an IRandomAccessStream object for the SetSource method, you need to use a DataWriter. Take a look to this code:

    public async Task<BitmapImage> GetImage(string value)
    {
        if (value == null)
            return null;

        var buffer = System.Convert.FromBase64String(value);
        using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
        {
            using (DataWriter writer = new DataWriter(ms.GetOutputStreamAt(0)))
            {
                writer.WriteBytes(buffer);
                await writer.StoreAsync();
            }

            var image = new BitmapImage();
            image.SetSource(ms);
            return image;
        }
    }

Problem

How can I load a `bitmapImage` from `base64String` in `windows 8`? I tried this but I am not successful. It used to work on windows phone. What is different? Looks like I have to use the function setsourceasync. When I use that, then I am required to pass the parameter as IRandomMemory which I am unable to do. How to do this? ``` public static BitmapImage Base64ToImage(string base64String) { var bitmapImage = new BitmapImage(); try { if (!String.IsNullOrEmpty(base64String)) { var imageBytes = Convert.FromBase64String(base64String); using (var ms = new MemoryStream(imageBytes, 0, imageBytes.Length)) { bitmapImage.SetSourcec(ms); return bitmapImage; } } } catch (Exception e) { } return null; } ```

Original source