[Resolved] Specify optional value for dropdownlist

Quick question, what do I put for the optional value for a dropdownlist?

Private Function SQL(ByVal bldg As Integer, Optional ByVal StudentID As String = "",
Optional ByVal combo As DropDownList = WHAT TO PUT HERE)
As String

Thanks in advance

Optional argument values have to be constants so the only thing you could put would be Nothing.

Perfect........thanks!!