I wrote a program in vb.net 2005 to open a spread sheet, read data and then
close the spreadsheet. The probelm is it is not really closing.

Dim xlApp As Excel.Application
Dim xlBook As Excel.Workbook
Dim xlSheet As Excel.Worksheet

' OPEN WORKSHEET AND DO STUFF

xlBook.Application.Visible = True
xlBook.Windows(1).Visible = True
xlBook.Application.WindowState = Excel.XlWindowState.xlMinimized

' Call loadSheet(xlbook.Worksheets(SheetName))

xlBook.Close(True)
xlApp.Quit()
NAR(xlBook)
NAR(xlApp)



Private Sub NAR(ByVal o As Object)
Try
System.Runtime.InteropServices.Marshal.ReleaseComO bject(o)
Catch ex As Exception
Finally
o = Nothing
End Try
End Sub


Can someone tell me what I am doing wrong?

--
Arnie