FERMER CORRECTEMENT EXCEL - KILL EXCEL

Imports Microsoft.Office.Interop


' Lancer Excel, ouvrir un fichier, fermer Excel :
Public Class Test
        Dim oExcelApp As New MSExcelApp


        ' Start Excel application (invisible session) and open Excel file
        ' Ouvre Excel en session invisible, et ouvre un fichier Excel
        With oExcelApp
            .Start(False)
            .OpenFile("c:\fichier_excel.xls")

            ' Faites ce que vous voulez ici

            ' Quitte Excel
            .Quit()
        End With
End Class


Public Class MSExcelApp

    Public Shared oExcelApp As Excel.Application
    Private intID As Int16


    Public Sub Start(ByVal blnVisible As Boolean)
        ' Start Excel, the application can be visible or not (blnVisible)
        ' Lance Excel, l'application peut être visible ou non (blnVisible)

        ' List all the running Excel processes
        ' Liste tous les procesus Excel en cours
        Dim intFirstIDs() As Int16 = MSExcelApp.ListID()

        ' Open Excel
        ' Ouvre Excel
        oExcelApp = New Excel.Application
        oExcelApp.Visible = blnVisible

        ' List one more time all the running Excel processes, so we can compare with the first list
        ' Liste de nouveau tous les procesus Excel en cours, pour pouvoir comparer avec la première liste
        Dim intLastIDs() As Int16 = MSExcelApp.ListID()

        ' Get the ID
        ' Extraction de l'ID grâce à la comparaison des 2 listes
        intID = MSExcelApp.ExtractID(intFirstIDs, intLastIDs)
    End Sub


    ' Ouvre un fichier Excel
    Public Sub OpenFile(ByVal strAbsolutePath As String)
        oExcelApp.Workbooks.Open(strAbsolutePath)
    End Sub



    ' Ferme Excel en tuant le procesus, nous devons lui fournir en paramètre l'ID récupéré
    ' lors de la création de la session Excel
    Public Sub Quit()
        Try
            Process.GetProcessById(intID).Kill()
        Catch ex As Exception
            MessageBox.Show(ex.Message & ex.StackTrace, "Error while closing Excel.", _
                MessageBoxButtons.OK, MessageBoxIcon.Error)
        End Try

    End Sub



    ' Fonction qui liste les procesus
    Private Shared Function ListID() As Int16()
        ' Get the ID's processes list in a array and sort it
        ' It is the only way to close Excel:
        ' To close Excel, we need to list the Excel ID's processes  before user starts excel
        ' then we list them one more time just after opening Excel.
        ' We compare both of the lists we have to extract the new Excel ID of the brand new fucking Excel 
        ' session.  So we can kill this process with the ID we got, without killing other Excel user
        ' session.
        ' L'explication ci-dessus résume l'explication générale de la méthode, cf présentation du code


        ' Get ID's processes list
        Dim Processes As Process() = Nothing
        Processes = Process.GetProcessesByName("EXCEL")



        ' Load ID Processes in Array
        Dim intProcesses(Processes.GetUpperBound(0)) As Int16
        Dim i As Int16
        For i = 0 To Processes.GetUpperBound(0)
            intProcesses(i) = CInt(Processes(i).Id.ToString)
        Next

        Return intProcesses
    End Function


    ' Fonction qui compare les 2 listes de IDs, et nous renvoie l'ID voulu.
    Private Shared Function ExtractID(ByVal intFirstIDs As Int16(), ByVal intLastIDs As Int16()) As Int16
        Dim intID As Int16 = Nothing
        Dim intID_FirsList As Int16 = Nothing
        Dim intID_LastList As Int16 = Nothing
        Dim i As Int16 = Nothing


        For i = 0 To intLastIDs.GetUpperBound(0)
            intID_LastList = intLastIDs(i)

            If Array.IndexOf(intFirstIDs, intID_LastList) = -1 Then
                intID = intID_LastList
                Exit For
            End If
        Next

        Return intID
    End Function
End Class