Hallo Tician,
 
private Microsoft.Office.Interop.Excel.Application myExcelApplication = null;
private Microsoft.Office.Interop.Excel.Workbook myExcelWorkbook = null;
private void Release()
        {
            myExcelApplication.Quit();
            releaseObject(myExcelWorkbook);
            releaseObject(myExcelApplication);
        }
        private void releaseObject(object obj)
        {
            try
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                obj = null;
            }
            catch (Exception ex)
            {
                obj = null;
                MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
            }
            finally
            {
                GC.Collect();
            }
        }
	Gruß
 
	 
 
	Ronald