Datagridview show and hide image in header cell or change the border color in the header cell

How I can add a little icon in the header cell without changi开发者_如何学运维ng its formating and its text? I want to toggle show/hide the image in header cell on right click of the mouse.

My problem is not with mouse events but I do not know how to show and hide an image in a header cell. If it's not possible I would like to toggle the border color or something else so the user can know that something happened.

I've tried already code like this : How to display an image in a datagridview column header?.

my code:

if (e.ColumnIndex == 1 && e.RowIndex == -1)
            {
                e.PaintBackground(e.ClipBounds, false);


                Point pt = e.CellBounds.Location;  // where you want the bitmap in the cell

                int offset = (e.CellBounds.Width - this.imageList1.ImageSize.Width) / 2;
                pt.X += offset;
                pt.Y += 1;
                this.imageList1.Draw(e.Graphics, pt, 0);


                e.Handled = true;




            }

A minor problem is that this code remove the CellHeaders text, this I could fix with storing the column names in a string array and to display it by the e.ColumnIndex:

Font drawFont = new Font("Microsoft Sans Serif", 10);
SolidBrush drawBrush = new SolidBrush(Color.Black);

e.Graphics.DrawString(storredColNames[e.ColumnIndex], drawFont, drawBrush, e.CellBounds);

Is there another way to preserve the Col Names?

I tried stuff like this but it seems that I can acces the image just when it paints the cells, but I need to be able to acces the image when I right click, for showing and hiding it. Is there a way to do this ?