Sub Initialize
 On Error Goto processError
 On Error lsERR_NOTES_DATABASE_NOTOPEN _
 Goto processNotOpen
 Dim dc As NotesDocumentCollection
 Dim db As New NotesDatabase("", Inputbox("Database?"))
 Set dc = db.AllDocuments
 Exit Sub
processNotOpen:
 reply = Messagebox _
 ("Database name is wrong", MB_RETRYCANCEL)
 If reply = IDRETRY Then
   Call db.Open("", Inputbox("Database?"))
   Resume
 Else
   Messagebox "Error " & Err() & ":" & Error()
   Exit Sub
 End If
processError:
 Messagebox "Error " & Err() & ":" & Error()
 Exit Sub
End Sub

Sub Initialize
 Dim dc As NotesDocumentCollection
 Dim db As New NotesDatabase("", _
 Inputbox("Database?"))
 Do While Not db.IsOpen
   reply = Messagebox _
   ("Database name is wrong", MB_RETRYCANCEL)
   If reply = IDRETRY Then
     Call db.Open("", Inputbox("Database?"))
   Else
     Messagebox "Database can't be opened"
     Exit Sub
   End If
 Loop
 Set dc = db.AllDocuments
End Sub

Sub Initialize
 Dim dc As NotesDocumentCollection
 Dim db As New NotesDatabase("", "")
 Do While Not db.Open("", Inputbox("Database?"))
   reply = Messagebox _
   ("Database name is wrong", MB_RETRYCANCEL)
   If reply <> IDRETRY Then
     Messagebox "Database can't be opened"
     Exit Sub
   End If
 Loop
 Set dc = db.AllDocuments
End Sub