Hey guys.  I've got an existing VB.NET Windows form application that I'm converting over to a C#.NET WPF application and I'm running into an error I can't work out.  The program looks at EPDM and gets a list of all the available serial number names and lets the user pick a serial number to use and then generates the next available number in that series.  It worked in the VB form application.

What I've got at the moment:

        public EdmVault5 VaultHook = new EdmVault5();
        public IEdmSerNoGen7 EPDMSerialNumbersAvailable;
        public Array EPDMSerialNumberNames;
        public EdmLib.IEdmSerNoValue EPDMSerialNumberGenerated;
       

        public MainWindow() {
            InitializeComponent();

            var handle = new System.Windows.Interop.WindowInteropHelper(this).Handle.ToInt32();

            VaultHook.LoginAuto("Vault", handle);

            EPDMSerialNumbersAvailable = VaultHook.CreateUtility(EdmUtility.EdmUtil_SerNoGen);
            EPDMSerialNumbersAvailable.GetSerialNumberNames(EPDMSerialNumberNames);

            }

This line:  EPDMSerialNumbersAvailable.GetSerialNumberNames(EPDMSerialNumberNames); is giving me an error saying that:

The best overloaded method match for 'EdmLib.IEdmSerNoGen7.GetSerialNumberNames(out System.Array)' has some invalid arguments

Does anyone know why I'm getting that error??