如何用工作表中的形状填充imagelist ?

I wish to create a Treeview with images and data from a worksheet (each line has the name of a part, its next up assembly and an icon all populated by the user). I've finally managed to get the treeview to populate correctly and to include images from an external source (based on code from various sources and just a little of my own). Setting up the Imagelist and assigning it to the Treeview is still a mystery to me but it works.I wish to create a Treeview with images and dat