Open Dialog Intial Directory?

Hello,

        I'm sure this is easy, but I am having a brain fart or something. I
have from which contains a OpenFileDialog box. I would like to figure out a
way to save the last folder opened and save it somewhere so that the next
time I open the FileDialog box I can set the InitialDirectory to that
folder. This state does not have to span past the current use of the app. In
other words open app, select thisform from main_menu. Open File Dialog, do
something close thisform. Do something else in app, open thisform, Open File
Dialog set intialDirectory to last used. The problem is by closing the
thisform all the var in the form are lost and reinitialize to default. So
not sure where to keep the information of lastFolderUsed.

Thanks