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

This has worked successfully for me:

        xlApp.Quit();

        //release all memory - stop EXCEL.exe from hanging around.
        if (xlWorkBook != null) { Marshal.ReleaseComObject(xlWorkBook); } //release each workbook like this
        if (xlWorkSheet != null) { Marshal.ReleaseComObject(xlWorkSheet); } //release each worksheet like this
        if (xlApp != null) { Marshal.ReleaseComObject(xlApp); } //release the Excel application
        xlWorkBook = null; //set each memory reference to null.
        xlWorkSheet = null;
        xlApp = null;
        GC.Collect();