Why don't you just make the app take a screenshot and save it for you?
, , , , - , .
bmp :
Size s = Screen.PrimaryScreen.Bounds.Size;
Bitmap bmp = new Bitmap(s.Width, s.Height);
Graphics g = Graphics.FromImage(bmp);
g.CopyFromScreen(0, 0, 0, 0, s);
BMP :
bmp.Save("PATHANDFILENAME");
, (, Tom). , , . .