I have created a reusable class. I'm now creating a form to test it. On the form I have several text boxes which accept input.I have created a main menu to add the aircraftid to the listbox. This is the code for the menu if I add. Me.lstboxAircraftID.items.add(txtAircraftID.Text) to the below code when I type in the aircraftId in the text box and click the menu instead of the aircraftId populating the listbox the word system.window appears. Does anyone know what I'm doing wrong?

Private Sub mmuRecordSaveArrival_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mmuRecordSaveArrival.Click