using image server control i need code for rotate and flip,zoom,color cahge in asp.net with c#

This has nothing specifically to do with asp.net. It's a matter of using the framework.

A simple google search revealed this method for rotating an image (using C#).

#
public static Image RotateImage(Image img, float rotationAngle)
{
    //create an empty Bitmap image
    Bitmap bmp = new Bitmap(img.Width, img.Height);

    //turn the Bitmap into a Graphics object
    Graphics gfx = Graphics.FromImage(bmp);

    //now we set the rotation point to the center of our image
    gfx.TranslateTransform((float)bmp.Width / 2, (float)bmp.Height / 2);
 
    //now rotate the image
    gfx.RotateTransform(rotationAngle);
 
    gfx.TranslateTransform(-(float)bmp.Width / 2, -(float)bmp.Height / 2);
 
    //set the InterpolationMode to HighQualityBicubic so to ensure a high
    //quality image once it is transformed to the specified size
    gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
 
    //now draw our new image onto the graphics object
    gfx.DrawImage(img, new Point(0, 0));
 
    //dispose of our Graphics object
    gfx.Dispose();
 
    //return the image
    return bmp;
} 

Using google is not only easy, it's a lot faster than posting a question and waiting for the answer you want.