Excel process remains open after interop; traditional method not working

Question

I\'m running into an issue with some code I\'m debugging. Excel interop is used to extract some values from a workbook; however, Excel remains open after the program has exi

Answer 1

I am a total COM amateur, used it for a minor thing in one project quite a long time ago, but here's a snippet I used there. I probably found it somewhere online, don't remember. In any case, I paste it its full glory ;)

public static class ComBlackBox
{
    public static void ReleaseObject(object obj)
    {
        try
        {
            System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
            obj = null;
        }
        catch (ArgumentException ex)
        {
            obj = null;
            MessageBox.Show("Unable to release the Object " + ex.Message);
        }
        finally
        {
            GC.Collect();
        }
    } 
}

I'm unable to try it out now, but it probably worked (I honestly don't remember any details). Maybe it will help you out. Feel free to point out any obvious problems with this code, I really am far from being COM-literate ;)