c# - displaying image in cell header -

i need display image in cell header. problem i'm using class contains various methods gui , can't figure out how use cellpaint event in class. there way how can update class, same way update cell value or has cellpaint event? thanks!

edit:

class gui {    public void fixgridcells(datagridview grid){     }     public void assigncellimages(datagridview grid){       grid.column[0].header = myimage; // <-- need    } }  // myform.cs  myform_load(){    gui gui = new gui();    gui.fixgridsize(mygrid);    gui.assigncellimages(mygrid); // <-- need call } 

first of all, need create image object image file.

image iconimg = image.fromfile("c:\\logo.jpg"); 

after use datagridview cell painting event.

 private void datagridview1_cellpainting(system.object sender, system.windows.forms.datagridviewcellpaintingeventargs e)     {         if (e.rowindex == -1 && e.columnindex == datagridview1.columns.count - 1)         {             e.paint(e.cellbounds, datagridviewpaintparts.all & !datagridviewpaintparts.contentforeground);             e.graphics.drawimage(iconimg, e.cellbounds);             e.handled = true;         }     } 

hope help.