I saw a question about the following posted here in March (showed up in first Google hits). The answer was a tricky thing (just wasted an hour on it due to poor support on DirListBoxes), so I thought I'd add the answer here as a reference. The original question was how to make a DirListBox set a folder like a user would by doubleclicking on it. The answer is: by setting the DirListBox's path to the path of the selected line, but that wasn't straightforward, so here is the VB.NET code for doing that: -----(( START )) dim zObject as Object, zString as String zObject = DirListBox1.DirList(DirListBox1.DirListIndex) zString = zObject.ToString DirListBox1.Path = zString -----(( END )) You can do zString = DirListBox1.DirList(DirListBox1.DirListIndex) if you want, but the above code is 'cleaner'.