message d'erreur sur System.Runtime.InteropServices

merci pour ta reponse:
la fonction qui genere ce message est la suivante:
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Private Sub fct_fill_excel(ByVal lines() As String, ByVal sqltype As String)
        Dim line_0() As String
        Try
 
            Dim line_1() As String
            Dim line_2() As String
            Dim line_3() As String
            Dim line_x() As String
            Dim i As Integer
            Dim strsql As String
            Dim qty As Decimal
            Dim S1, ErrStr As String
            Dim po_xl As Excel.Application
            Dim po_book As Excel.Workbook
            Dim po_sheet As Excel.Worksheet
 
 
            If sqltype = "PO" Or sqltype = "MA" Then
 
                'lines(0)
                line_0 = Split(Replace(Replace(lines(0), Chr(34), ""), "'", " "), ";")
 
                'lines(1)
                line_1 = Split(Replace(Replace(lines(1), Chr(34), ""), "'", " "), ";")
 
                'lines(2)
                line_2 = Split(Replace(Replace(lines(2), Chr(34), ""), "'", " "), ";")
 
                'lines(3)
                line_3 = Split(Replace(Replace(lines(3), Chr(34), ""), "'", " "), ";")
 
                'Création des settings pour la gestion du po dans excel
                po_xl = New Excel.Application
                'po_xl = CreateObject("Excel.Application")
 
                If line_1(1) = "E" Then
                    'po_book = po_xl.Workbooks.Open(Filename:=layout_e)
                    po_xl.Workbooks.Open(Filename:=layout_e)
                Else
                    'po_book = po_xl.Workbooks.Open(Filename:=layout_f)
                    po_xl.Workbooks.Open(Filename:=layout_f)
                End If
                po_sheet = po_xl.ActiveSheet
                po_xl.Visible = False
                'Création de l'entête du PO
                'to
                If line_3(1) <> "" And line_3(2) <> "" Then
                    po_sheet.Cells(2, 7) = line_2(0).ToUpper
                    po_sheet.Cells(3, 7) = line_3(0).ToUpper
                    po_sheet.Cells(4, 7) = line_3(1).ToUpper
                    po_sheet.Cells(5, 7) = line_3(2).ToUpper
                    po_sheet.Cells(6, 7) = line_3(3).ToUpper & ", " & line_3(4).ToUpper & "  " & line_3(5).ToUpper
                    po_sheet.Cells(7, 7) = line_3(6).ToUpper
                ElseIf line_3(1) = "" And line_3(2) = "" Then
                    po_sheet.Cells(2, 7) = line_2(0).ToUpper
                    po_sheet.Cells(3, 7) = line_3(0).ToUpper
                    po_sheet.Cells(4, 7) = line_3(3).ToUpper & ", " & line_3(4).ToUpper & "  " & line_3(5).ToUpper
                    po_sheet.Cells(7, 7) = line_3(6).ToUpper
                ElseIf line_3(1) <> "" And line_3(2) = "" Then
                    po_sheet.Cells(2, 7) = line_2(0).ToUpper
                    po_sheet.Cells(3, 7) = line_3(0).ToUpper
                    po_sheet.Cells(4, 7) = line_3(1).ToUpper
                    po_sheet.Cells(5, 7) = line_3(3).ToUpper & ", " & line_3(4).ToUpper & "  " & line_3(5).ToUpper
                    po_sheet.Cells(7, 7) = line_3(6).ToUpper
                ElseIf line_3(1) = "" And line_3(2) <> "" Then
                    po_sheet.Cells(2, 7) = line_2(0).ToUpper
                    po_sheet.Cells(3, 7) = line_3(0).ToUpper
                    po_sheet.Cells(4, 7) = line_3(2).ToUpper
                    po_sheet.Cells(5, 7) = line_3(3).ToUpper & ", " & line_3(4).ToUpper & "  " & line_3(5).ToUpper
                    po_sheet.Cells(7, 7) = line_3(6).ToUpper
                End If
 
                'ship to
                If line_2(6) <> "" And line_2(7) <> "" Then
                    po_sheet.Cells(2, 15) = line_2(21).ToUpper
                    po_sheet.Cells(3, 15) = line_2(14).ToUpper
                    po_sheet.Cells(4, 15) = line_2(6).ToUpper
                    po_sheet.Cells(5, 15) = line_2(7).ToUpper
                    po_sheet.Cells(6, 15) = line_2(8).ToUpper & ", " & line_2(9).ToUpper & "  " & line_2(10).ToUpper
                    po_sheet.Cells(7, 15) = line_2(12).ToUpper
                ElseIf line_2(6) = "" And line_2(7) = "" Then
                    po_sheet.Cells(2, 15) = line_2(21).ToUpper
                    po_sheet.Cells(3, 15) = line_2(14).ToUpper
                    po_sheet.Cells(4, 15) = line_2(8).ToUpper & ", " & line_2(9).ToUpper & "  " & line_2(10).ToUpper
                    po_sheet.Cells(7, 15) = line_2(12).ToUpper
                ElseIf line_2(6) <> "" And line_2(7) = "" Then
                    po_sheet.Cells(2, 15) = line_2(21).ToUpper
                    po_sheet.Cells(3, 15) = line_2(14).ToUpper
                    po_sheet.Cells(4, 15) = line_2(6).ToUpper
                    po_sheet.Cells(5, 15) = line_2(8).ToUpper & ", " & line_2(9).ToUpper & "  " & line_2(10).ToUpper
                    po_sheet.Cells(7, 15) = line_2(12).ToUpper
                ElseIf line_2(6) = "" And line_2(7) <> "" Then
                    po_sheet.Cells(2, 15) = line_2(21).ToUpper
                    po_sheet.Cells(3, 15) = line_2(14).ToUpper
                    po_sheet.Cells(4, 15) = line_2(7).ToUpper
                    po_sheet.Cells(5, 15) = line_2(8).ToUpper & ", " & line_2(9).ToUpper & "  " & line_2(10).ToUpper
                    po_sheet.Cells(7, 15) = line_2(12).ToUpper
                End If
                '# cmd
                po_sheet.Cells(10, 1) = line_2(1).ToUpper
                'Date cmd
                If line_1(1) = "E" Then
                    po_sheet.Cells(10, 5) = line_2(2).Substring(3, 2) & "/" & line_2(2).Substring(6, 2) & "/" & line_2(2).Substring(0, 2)
                Else
                    po_sheet.Cells(10, 5) = line_2(2).Substring(6, 2) & "/" & line_2(2).Substring(3, 2) & "/" & line_2(2).Substring(0, 2)
                End If
                'Date livrais
                If line_1(1) = "E" Then
                    po_sheet.Cells(10, 6) = line_2(3).Substring(3, 2) & "/" & line_2(3).Substring(6, 2) & "/" & line_2(3).Substring(0, 2)
                Else
                    po_sheet.Cells(10, 6) = line_2(3).Substring(6, 2) & "/" & line_2(3).Substring(3, 2) & "/" & line_2(3).Substring(0, 2)
                End If
                'Ship by
                po_sheet.Cells(10, 7) = line_2(17).ToUpper
                'FOB
                po_sheet.Cells(10, 10) = line_2(13).ToUpper
                'tx
                po_sheet.Cells(9, 16) = line_2(19).ToUpper
                po_sheet.Cells(10, 16) = line_2(20).ToUpper
                '# fact
                po_sheet.Cells(12, 1) = line_2(4).ToUpper
                'Buyer
                po_sheet.Cells(12, 5) = line_2(12).ToUpper
                'Terms
                po_sheet.Cells(12, 8) = line_2(5).ToUpper
                'Freight
                po_sheet.Cells(12, 11) = line_2(11).ToUpper
 
                'Création des lignes de PO
                For i = 4 To lines.GetUpperBound(0) - 1
                    line_x = Split(Replace(Replace(lines(i), Chr(34), ""), "'", " "), ";")
                    qty = qty + line_x(1)
                    'line
                    po_sheet.Cells(12 + i, 1) = line_x(0).ToUpper
                    'qte
                    po_sheet.Cells(12 + i, 2) = line_x(1).ToUpper
                    'vendor-item
                    If line_x(2) = "" Then
                        po_sheet.Cells(12 + i, 4) = line_x(4).ToUpper
                    Else
                        po_sheet.Cells(12 + i, 4) = line_x(2).ToUpper
                    End If
                    'desc
                    po_sheet.Cells(12 + i, 6) = line_x(3).ToUpper
                    'item-number
                    po_sheet.Cells(12 + i, 11) = "#PHV : " & line_x(4).ToUpper
                    'udm
                    po_sheet.Cells(12 + i, 15) = line_x(5).ToUpper
                    'prix
                    po_sheet.Cells(12 + i, 16) = CDec(line_x(6))
                    'amount
                    po_sheet.Cells(12 + i, 17) = CDec(line_x(7))
                Next
                po_sheet.Cells(12 + i + 1, 4) = line_x(10).ToUpper & line_x(11).ToUpper & line_x(12).ToUpper & line_x(13).ToUpper & line_x(14).ToUpper & line_x(15).ToUpper & line_x(16).ToUpper & line_x(17).ToUpper & line_x(18).ToUpper & line_x(19).ToUpper & line_x(20).ToUpper & line_x(21).ToUpper & line_x(22).ToUpper & line_x(23).ToUpper
                po_sheet.Cells(12 + i + 3, 2) = "________"
                po_sheet.Cells(12 + i + 3, 17) = "___________"
                If line_1(1) = "E" Then
                    If line_2(15) = "USD" Then
                        po_sheet.Cells(12 + i + 3, 5) = "****** AMOUNTS SPECIFIED IN U.S.A CURRENCY ******"
                    Else
                        po_sheet.Cells(12 + i + 3, 5) = "******* AMOUNTS SPECIFIED IN CDN CURRENCY *******"
                    End If
                Else
                    If line_2(15) = "USD" Then
                        po_sheet.Cells(12 + i + 3, 5) = "****** MONTANTS SPÉCIFIÉS EN DEVISE CDN ******"
                    Else
                        po_sheet.Cells(12 + i + 3, 5) = "****** MONTANTS SPÉCIFIÉS EN DEVISE USA ******"
                    End If
                End If
                po_sheet.Cells(12 + i + 4, 2) = qty
                po_sheet.Cells(12 + i + 4, 16) = "TOTAL : "
                po_sheet.Cells(12 + i + 4, 17) = CDec(line_2(16))
                po_xl.DisplayAlerts = False
                If line_0(0) = "@" Then
 
                    If File.Exists(f_out & "ma_" & line_0(1) & ".xls") Then
                        File.Delete(f_out & "ma_" & line_0(1) & ".xls")
                    End If
 
                    po_sheet.SaveAs(f_out & "ma_" & line_0(1) & ".xls")
                Else
 
                    If File.Exists(f_out & "po_" & line_0(1) & ".xls") Then
                        File.Delete(f_out & "po_" & line_0(1) & ".xls")
                    End If
 
                    po_sheet.SaveAs(f_out & "po_" & line_0(1) & ".xls")
                End If
 
                po_xl.Quit()
                po_sheet = Nothing
                po_book = Nothing
                po_xl = Nothing
 
                'Kill du process excel
                Dim Processes As Process() = Nothing
                Processes = Process.GetProcessesByName("EXCEL")
                ' Load ID Processes in Array
                Dim intProcesses(Processes.GetUpperBound(0)) As Int16
                Dim j As Int16
                For j = 0 To Processes.GetUpperBound(0)
                    Process.GetProcessById(CInt(Processes(j).Id.ToString)).Kill()
                Next
                'Envoi du email si tel est le cas
                If line_0(0) = "@" Then
                    fct_wait_sec(100000)
                    fct_send_mail(envoyeur, line_1(0), "Purchase Order/Commande d'Achat # " & line_0(1), 1, "<font face=arial size=2 color='black'>Purchase Order/Commande d'Achat # " & line_0(1) & "</font><br><br><img src='" & signature & "'><br><br><b><font face=arial size=2 color='#aaaaaa'>DISCLAIMER: </b><BR>This communication is for use by the intended recipient and contains information that may be privileged, confidential or copyrighted under applicable law. If you are not the intended recipient, you are hereby formally notified that any use, copying or distribution of this e-mail, in whole or in part, is strictly prohibited. Please notify the sender by return e-mail from your system.</font>", "ma_" & line_0(1))
                End If
            End If
        Catch ex As Exception
            fct_send_mail(envoyeur, warning, "ERREUR PO VIA MAIL " & line_0(1), 0, ex.ToString, "none")
            '# erreur no 8
            fct_exec_sql("UPDATE pur_order SET err=8 WHERE pur_order.po_number='" & line_0(1) & "'")
        End Try
    End Sub
j'espere m'ensortir parceke je suis vraiment bloque.
Merci une autre fois