programming in vb.net

Please I have a problem in vb.net. The problem is this, I have a combobox, cboSearchBy, with four column names (FileNo, Lessee, Location and TFNo). I need a code that when i select any of the four items in the combox then the data under that column in the sql database should load into the listbox(lstResult). Also, when i click on the any of the items on the listbox then it should display on the textboxes.