I can, but probably have no time to update until this weekend.
If you want fast solution check out following website.
Create a bitmap on your own, then use Graphics.FromImage(bitmap) method to get graphics. Use graphicsRenderer to draw QrCode on graphics object. then save bitmap.
using (Bitmap bitmap = new Bitmap(size.CodeWidth, size.CodeWidth))
using (Graphics graphics = Graphics.FromImage(bitmap))
One thing keep in mind that GraphicsRenderer use default DPI 96, you might have to convert pixel size from specific DPI to 96's DPI and then pass it to Renderer. Try around and see what happens. Else you have to wait for my update this weekend.