Exporting the data from data table in to Excel sheet

// TO USE:
            // 1) include COM reference to Microsoft Excel Object library
            // add namespace...
            // 2) using Excel = Microsoft.Office.Interop.Excel;
            private static void Excel_FromDataTable(DataTable dt)
            {
                // Create an Excel object and add workbook...
                Excel.ApplicationClass excel = new Excel.ApplicationClass();
                Excel.Workbook workbook = excel.Application.Workbooks.Add(true); // true for object template???

                // Add column headings...
                int iCol = 0;
                foreach (DataColumn c in dt.Columns)
                {
                    iCol++;
                    excel.Cells[1, iCol] = c.ColumnName;
                }
                // for each row of data...
                int iRow = 0;
                foreach (DataRow r in dt.Rows)
                {
                    iRow++;

                    // add each row's cell data...
                    iCol = 0;
                    foreach (DataColumn c in dt.Columns)
                    {
                        iCol++;
                        excel.Cells[iRow + 1, iCol] = r[c.ColumnName];
                    }
                }

                // Global missing reference for objects we are not defining...
                object missing = System.Reflection.Missing.Value;

                // If wanting to Save the workbook...
                workbook.SaveAs("MyExcelWorkBook.xls",
                    Excel.XlFileFormat.xlXMLSpreadsheet, missing, missing,
                    false, false, Excel.XlSaveAsAccessMode.xlNoChange,
                    missing, missing, missing, missing, missing);

                // If wanting to make Excel visible and activate the worksheet...
                excel.Visible = true;
                Excel.Worksheet worksheet = (Excel.Worksheet)excel.ActiveSheet;
                ((Excel._Worksheet)worksheet).Activate();

                // If wanting excel to shutdown...
                ((Excel._Application)excel).Quit();
            }