Rotate Image

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.NET2.0

.NET

I am rotating an image using the following code:

protected void Button2_Click1(object sender, EventArgs e)
{
string abc = Server.MapPath(Image2.ImageUrl.Replace("/", "\\"));
System.Drawing.Image img = System.Drawing.Image.FromFile(abc);
img.RotateFlip(System.Drawing.RotateFlipType.Rotate90FlipNone);

//re-save the picture as a Jpeg
img.Save(abc, System.Drawing.Imaging.ImageFormat.Jpeg);

//tidy up after we've finished
img.Dispose();
}

The rotation does happen but it is overwriting the original image on every click of button.

Scenario:
1. I have a grid showing images.
2. The image that is clicked in gridview is displayed in Image control.
3. Now, I apply rotate function on this image control.
I found the method mentioned above is overwriting the image and the image displayed in gridview also rotates. I do not want this.
Rotation should happen only in Image control for the image that is displayed in it.