二個圖片合並成一個圖片並保存成一個新文件

Bitmap bmp1 = new Bitmap(@"1.bmp");
Bitmap bmp2 = new Bitmap(@"2.bmp");
Bitmap bmp3 = new Bitmap(64,32);
Graphics g = Graphics.FromImage(bmp3);
g.draw(bmp1,0,0);
g.draw(bmp2,32,0);
g.save();
bmp3.save(@"3.bmp")