How can I write contains of 3 listboxes into 1 file without replacing each other's data. I can't write it to specific line, because listbox contains could be modified by user, it could be only one line in listbox, but it could be 20, so I need to get last line that was written by listbox 1, then write listbox 2 and before writting listbox 3, get last line that was written by listbox 2....how????