Path location

I have problem here. My application program run from this directory C:\PF\GUI .My image location is in this folder C:\PF\GUI\Image. How i can show the text box of my image files location like this .\image ? The . represent the application location "C:\PF\GUI"

Why not App.Path & "\Image"????

A textbox, or a listbox with the names of all images in it?