draw an "X" mark on image in asp.net using c#

Question

I have a web page where it displays an image (any car image to be exact),my problem is that i need this page to locate car damage by clicking on the image. For example if I click somewhere on the image, an "X" mark appears in the place I clicked. So my point is how set the "X" mark when mouse is clicked. I guess it is something related to the coordinates of the image.Is this possible to do? If yes can anyone help me? Thanks

Answer 1

Actually I found the answer for my own question

protected void ImageMap1_Click(object sender, ImageClickEventArgs e){

    int x = int.Parse(e.X.ToString());
    int y = int.Parse(e.Y.ToString());

    Bitmap bitMapIm = new System.Drawing.Bitmap(Server.MapPath("~/carImage.jpg"));
    Graphics graphicIm = Graphics.FromImage(bitMapIm);
    Pen penRed = new Pen(Color.Red, 3);
    graphicIm.DrawString("X", new Font("Arial", 25, FontStyle.Bold), Brushes.Red, x, y);
    bitMapIm.Save(Server.MapPath("~/carImage1.jpg"), ImageFormat.Jpeg);
    graphicIm.Dispose();
    bitMapIm.Dispose();
    ImageMap1.ImageUrl = "~/carImage1.jpg";
}