Concatener toute une ligne

Public Function CONCATENER_PLUS(TabOrRange As Variant, Optional strSep As String, Optional ByRow As Boolean) As String
Dim temp As Variant, i As Long, j As Long, fin As Long, R As Range
   If TypeOf TabOrRange Is Excel.Range Then
      If TabOrRange.Rows.Count = 1 And TabOrRange.Columns.Count = 1 Then
         CONCATENER_PLUS = TabOrRange.Value
      ElseIf TabOrRange.Rows.Count > 1 And TabOrRange.Columns.Count > 1 Then
         If ByRow Then
            ReDim temp(1 To TabOrRange.Rows.Count) As String
            For i = 1 To TabOrRange.Rows.Count
               For j = 1 To TabOrRange.Columns.Count
                  temp(i) = temp(i) & strSep & TabOrRange.Cells(i, j).Text
               Next
               temp(i) = Right$(temp(i), Len(temp(i)) - Len(strSep))
            Next
            CONCATENER_PLUS = Join(temp, strSep)
         Else
            ReDim temp(1 To TabOrRange.Rows.Count) As String
            For i = 1 To TabOrRange.Columns.Count
               For j = 1 To TabOrRange.Rows.Count
                  temp(j) = TabOrRange.Cells(i, j).Text
               Next
               CONCATENER_PLUS = CONCATENER_PLUS & strSep & Join(temp, strSep)
            Next
            CONCATENER_PLUS = Right$(CONCATENER_PLUS, Len(CONCATENER_PLUS) - Len(strSep))
         End If
      Else
         fin = TabOrRange.Rows.Count
         If fin = 1 Then fin = TabOrRange.Columns.Count
         ReDim temp(1 To fin)
         i = 1
         Do While TabOrRange.Cells(i).Value <> vbNullString And i <= fin
            temp(i) = TabOrRange.Cells(i)
            i = i + 1
         Loop
         ReDim Preserve temp(i - 1)
         CONCATENER_PLUS = Join(temp, strSep)
         CONCATENER_PLUS = Left$(CONCATENER_PLUS, Len(CONCATENER_PLUS) - Len(strSep))
         Erase temp
      End If
   ElseIf IsArray(TabOrRange) Then
      CONCATENER_PLUS = Join(TabOrRange, strSep)
   Else
      CONCATENER_PLUS = "#VALUE"
   End If
End Function