VBA Macro "VLookupAll", which uses a vlookup of a column to produce a concatenated string of related cells. Runs with the formula: =vlookupall(A,A:B,2, ", ")

VLookupAll Macro

Function vlookupall(sSearch As String, rRange As Range, _
    Optional lLookupCol As Long = 2, Optional sDel As String = ",") As String
'Vlookupall searches in first column of rRange for sSearch and returns
'corresponding values of column lLookupCol if sSearch was found. All these
'lookup values are being concatenated, delimited by sDel and returned in
'one string. If lLookupCol is negative then rRange must not have more than
'one column.
'Reverse("moc.LiborPlus.www") PB 16-Sep-2010 V0.20
Dim i As Long, sTemp As String
If lLookupCol > rRange.Columns.Count Or sSearch = "" Or _
    (lLookupCol < 0 And rRange.Columns.Count > 1) Then
    vlookupall = CVErr(xlErrValue)
    Exit Function
End If
vlookupall = ""
For i = 1 To rRange.Rows.Count
    If rRange(i, 1).Text = sSearch Then
        If lLookupCol >= 0 Then
            vlookupall = vlookupall & sTemp & rRange(i, lLookupCol).Text
        Else
            vlookupall = vlookupall & sTemp & rRange(i).Offset(0, lLookupCol).Text
        End If
        sTemp = sDel
    End If
Next i
End Function