Image Rotation without affecting Image

You will need to increase the size of the bitmap that the rotated image is drawn to
In the example I have uploaded, I used the image hypotenuse to scale the bitmap. A better way would be to calculate the distance between each of the four corners of the image in the horizontal and vertical planes. I've included an image of the "grid10.bmp" which I rotated in office imaging showing how it's done.
So if you save the image it's size would be the hypotenuse of the original width and height

also look here
http://www.vcskicks.com/image-rotate.php

Hi,

Am not able to attach the code in my post. So i have pasted my code below..

Code written in User Control
============================

 public void RotateImage1(PictureBox pb, Image img, float angle)
        {
            img = pictureBox1.Image;
            if (img == null || pb.Image == null)
                return;

            Image oldImage = pb.Image;
            pb.Image = Utilities.RotateImage(img, angle);
  if (oldImage != null)
  {
                oldImage.Dispose();
             }

        }

   public sealed class Utilities
    {
        private Utilities()
        {
        }

        public static Bitmap RotateImage(Image image, float angle)
        {
            var newBitmap = new Bitmap(image.Width, image.Height);
            var graphics = Graphics.FromImage(newBitmap);
            graphics.TranslateTransform((float)image.Width / 2, (float)image.Height / 2);
            graphics.RotateTransform(angle);
            graphics.TranslateTransform(-(float)image.Width / 2, -(float)image.Height / 2);
            graphics.DrawImage(image, new Point(0, 0));
            return newBitmap;
            //return RotateImage(image, new PointF((float)image.Width / 2, (float)image.Height / 2),angle);
        }

        public static Bitmap RotateImage(Image image, PointF offset, float angle)
        {
            if (image == null)
                throw new ArgumentNullException("image");

            //create a new empty bitmap to hold rotated image
            Bitmap rotatedBmp = new Bitmap(image.Width, image.Height);
            rotatedBmp.SetResolution(image.HorizontalResolution, image.VerticalResolution);

            //make a graphics object from the empty bitmap
            Graphics g = Graphics.FromImage(rotatedBmp);

            //Put the rotation point in the center of the image
            g.TranslateTransform(offset.X, offset.Y);

            //rotate the image
            g.RotateTransform(angle);

            //move the image back
            g.TranslateTransform(-offset.X, -offset.Y);

            //draw passed in image onto graphics object
            g.DrawImage(image, new PointF(0, 0));

            return rotatedBmp;
        }
    }

Hi,

There is no code attached !