How to Convert byte array to ImageSource for Windows 8.0 store application

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C#

Windows

application

I am working on Windows 8 store application. I am new at it.

I am receiving an image in the form of byte array (byte []).

I have to convert this back to Image and display it in Image Control.

so far I have button and Image control on Screen. When I click button, I call following function

private async Task LoadImageAsync()
{
    byte[] code = //call to third party API for byte array
    System.IO.MemoryStream ms = new MemoryStream(code);
    var bitmapImg = new Windows.UI.Xaml.Media.Imaging.BitmapImage();

    Windows.Storage.Streams.InMemoryRandomAccessStream imras = new Windows.Storage.Streams.InMemoryRandomAccessStream();

    Windows.Storage.Streams.DataWriter write = new Windows.Storage.Streams.DataWriter(imras.GetOutputStreamAt(0));
    write.WriteBytes(code);
    await write.StoreAsync();
    bitmapImg.SetSourceAsync(imras);
    pictureBox1.Source = bitmapImg;
}

This is not working properly. any idea?
When I debug, I can see the byte array in ms. but it is not getting converted to bitmapImg.