1001 نکته در سی شارپ

[sinpin]

private Bitmap rotateImage(Bitmap b, float angle)

{

    //create a new empty bitmap to hold rotated image

    Bitmap returnBitmap = new Bitmap(b.Width, b.Height);

    //make a graphics object from the empty bitmap

    Graphics g = Graphics.FromImage(returnBitmap);

    //move rotation point to center of image

    g.TranslateTransform((float)b.Width / 2, (float)b.Height / 2);

    //rotate

    g.RotateTransform(angle);

    //move image back

    g.TranslateTransform(-(float)b.Width / 2, -(float)b.Height / 2);

    //draw passed in image onto graphics object

    g.DrawImage(b, new Point(0, 0));

    return returnBitmap;

}

مثال استفاده :

private void button1_Click(object sender, EventArgs e)

{

    Bitmap b = (Bitmap) pictureBox1.Image;

    pictureBox2.Image = rotateImage(b, 60);

}

منبع : http://blog.paranoidferret.com/index...diting-rotate/