Hello,

I has a routine which is writen in VB.Net to open an excel workbook, update
it, save it and close it.

I am performing all the necessary steps to destroy a reference to excel,
including "ReleaseComObject" etc.
but I still have a EXCEL.EXE process running in task manager which I can't
get rid of.

Here is a sample of the Code:

       Dim objXL As Excel.Application
       Dim objWB As Workbook
       Dim objProperty As Object

       Try

           objXL = New Excel.Application

           File.SetAttributes(strFile, FileAttributes.Normal)
           objWB = objXL.Workbooks.Open(strFile)

           For Each objProperty In objWB.CustomDocumentProperties
           If objProperty.Name = "xxx" Then
               blnFound = True
               Exit For
           End If

System.Runtime.InteropServices.Marshal.ReleaseComObject(objProperty)
           objProperty = Nothing
           Next

           If blnFound Then
               objProperty.Value = "abc"

System.Runtime.InteropServices.Marshal.ReleaseComObject(objProperty)
               objProperty = Nothing
           Else
               objWB.CustomDocumentProperties.Add("xxx", False,
Microsoft.Office.Core.MsoDocProperties.msoPropertyTypeString, strValue)
           End If

           objWB.Close(True)
           File.SetAttributes(strFile, FileAttributes.ReadOnly)

           System.Runtime.InteropServices.Marshal.ReleaseComObject(objWB)
           objWB = Nothing

       Catch ex As Exception
           Throw ex
       Finally
           If Not objProperty Is Nothing Then

System.Runtime.InteropServices.Marshal.ReleaseComObject(objProperty)
               objProperty = Nothing
           End If
           If Not objWB Is Nothing Then

System.Runtime.InteropServices.Marshal.ReleaseComObject(objWB)
               objWB = Nothing
           End If
           If Not objXL Is Nothing Then
               objXL.Quit()

System.Runtime.InteropServices.Marshal.ReleaseComObject(objXL)
               objXL = Nothing
           End If
           GC.Collect()
End Try

any suggestion on the correct way to kill Excel.

regards Tim