How to show an image on a window?

[TheProff]

I am making a program to explore the Mandelbrot set in C#. The function I have (called renderset) works fine and spits out an image of the specific area you want. I would like to display this onscreen but I can't figure out how. I have tried to make it into a texture and then convert that into a sprite and display it but that doesn't work. (My window opens but is completely black)  Does anybody know a better way to do this or how to fix my current method.

Thanks for any help 

Link to code: https://pastebin.com/0jNnJY9A

[eXpl0it3r]

I feel like this should work just fine. Would have to debug it to find out what's going on.