You already got your answer here:
http://stackoverflow.com/questions/4776939/equivalent-of-bufferedimage-from-java-to-c[
^].
You can use the Bitmap class from System.Drawing. For that to work though I think you'll have to add a reference to System.Drawing to your project. Adding a reference is done via solution explorer. In your code you can add a using statement so you don't have to fully qualify the type:
using System.Drawing;
...
...
Bitmap bm = ....
As soon as this works you'll have to change the code that accesses the Bitmaps bytes.
Best Regards,
Manfred