Combine csv file with existing excel file.

[rizzsid11]

My application (I'm using vb.net 2008)generates an excel file with login details and a csv file. How do I add the csv contents to the open excel file? If I can get the hang of this then I can combine six csv file with the ecel file

rivate Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim oExcel As Object
        Dim oBook As Object
        Dim oSheet As Object

        oExcel = CreateObject("Excel.Application")
        oBook = oExcel.Workbooks.Open("J:\vb\RizRandom\RizRandom\UBM.xlsx") ' Add
        oExcel.Visible = True
        oSheet = oBook.Worksheets(1)
     

        Dim csvFile As String = Dir("J:\*.csv") ' vb\RizRandom\poo.csv")
        
        Do While csvFile <> ""
            oBook.Open("J:\" & csvFile)
            oBook.Sheets.Add() ' add a new worksheet
            oBook.Sheets(1).cells.copy()
            oBook.Sheets(1).paste()
            oBook.Sheets(1).name = csvFile 'rename the worksheet
            csvFile = Dir()
        Loop
    
        oExcel.DisplayAlerts = vbFalse
        oExcel.AlertBeforeOverwriting = vbFalse
        oBook.SaveAs("J:\vb\RizRandom\RizRandom\TestUBM.xlsx")
        oBook.Close()
       
        oExcel = Nothing
        GC.Collect()
    End Sub