Question : Accessing Notes Items in Domino with VB.NET

After the "doc = dbNotes.CreateDocument" line doc looks OK except items is Nothing.
After the line "item = doc.GetFirstItem("Invoice_Number") " item is Nothing, which goes along with the previous.
How do I associate the doc variable with the form "Document" which is in the dbNotes database?  The form "Docuemnt" contains the fields/items that I am trying to populate.

I am using VS2005, VB.NET, and the Interop.Domino library, which doesn't seem to have a UIDocument.
 
   ***********************************************************************************************
    ' Setup Notes database access
        Dim NotesSession As New NotesSession
        Dim dbNotes As NotesDatabase
        Dim doc As NotesDocument
        Dim item As NotesItem
        Dim strArray As String()
        Dim I As Int32
        Dim Field As String

        frmMergeIC.sbMerge.Text = "Moving image to Notes"

        ' Add the image
        Try
            NotesSession.Initialize("")
            dbNotes = NotesSession.GetDatabase(NotesServer, NotesDatabase)
            doc = dbNotes.CreateDocument

            ' Update the Invoice Number
            item = doc.GetFirstItem("Invoice_Number")
            strArray = Split(invnum, "*")
            For I = 0 To UBound(strArray)
                Field = strArray(I)
                If Field <> "" Then Call item.AppendToTextList(Field)
            Next I
 

Answer : Accessing Notes Items in Domino with VB.NET

That is because a new document does not have any items.  You need to create the item first using ReplaceItemValue.

instead of ...

item = doc.GetFirstItem("Invoice_Number")

... try using ...

item = doc.ReplaceItemValue("Invoice_Number", "")