C# image concatenation

Question

What i want to is, take 3 images, that the 1st image, keep it to original size concatenate anothother image to the bottom of it only using 1/2 of the first images size( starting

Answer 1

If you ignore aspect ratio:

        Image img1;
        Image img2;
        Image img3;

        Bitmap display = new Bitmap(img1.Width, (int)(img1.Height * 1.5));
        Graphics g = Graphics.FromImage(display);

        //draw img1 to upper left corner
        g.DrawImage(img1, 0, 0);

        //draw img2 under img1, left side
        g.DrawImage(img2, 0, img1.Height, img1.Width / 2.0f, img1.Height / 2.0f);

        //draw img3 under img1, right side
        g.DrawImage(img3, img1.Width / 2.0f, img1.Height, img1.Width / 2.0f, img1.Height / 2.0f);