Export Excel - c#

/// <summary>

        /// Export to xls to directory Path

        /// </summary>

        public static void ExportListFromTable()

        {

            // Here we create a DataTable with four columns.

            System.Data.DataTable table = new System.Data.DataTable();

            table.Columns.Add("File Path", typeof(string));

            table.Columns.Add("File Size", typeof(string));

            table.Columns.Add("Start DateTime", typeof(DateTime));

            table.Columns.Add("End DateTime", typeof(DateTime));

            table.Columns.Add("Status", typeof(string));

            // Here we add five DataRows.

            table.Rows.Add("FilePath", "Size", DateTime.Now, DateTime.Now, "Success");

            table.Rows.Add("FilePath", "Size", DateTime.Now, DateTime.Now, "Success");

            table.Rows.Add("FilePath", "Size", DateTime.Now, DateTime.Now, "Success");

            table.Rows.Add("FilePath", "Size", DateTime.Now, DateTime.Now, "Success");

            DirectoryInfo dir = new DirectoryInfo(@"D:\Reports");

            dir.Create();

            string excelFileName = string.Format(@"D:\Reports\FileLog_{0}.xls", DateTime.Now.Ticks.ToString());

            FileInfo file = new FileInfo(excelFileName);

            StreamWriter streamWriter = file.CreateText();

            StringWriter stringWriter = new StringWriter();

            HtmlTextWriter htmlTextWriter = new HtmlTextWriter(stringWriter);

            Table tblListView = new Table();

            tblListView.ID = "_tblListView";

            tblListView.BorderStyle = BorderStyle.Solid;

            tblListView.BorderWidth = Unit.Pixel(1);

            tblListView.BorderColor = System.Drawing.Color.Silver;

            System.Data.DataView dvListViewData = table.DefaultView;

            if (dvListViewData != null && dvListViewData.Count > 0)

            {

                tblListView.Rows.Add(new TableRow());

                tblListView.Rows[0].BackColor = System.Drawing.Color.Gainsboro;

                tblListView.Rows[0].Font.Bold = true;

                for (int i = 0; i < table.Columns.Count; i++)

                {

                    tblListView.Rows[0].Cells.Add(new TableCell());

                    tblListView.Rows[0].Cells[i].Text = table.Columns[i].ToString();                 

                }

                for (int i = 0; i < dvListViewData.Count; i++)

                {

                    tblListView.Rows.Add(new TableRow());

                    for (int j = 0; j < table.Columns.Count; j++)

                    {

                        tblListView.Rows[i + 1].Cells.Add(new TableCell());                    

                            tblListView.Rows[i + 1].Cells[j].Text = dvListViewData[i][j].ToString();                      

                    }

                }

            }

            tblListView.RenderControl(htmlTextWriter);

            streamWriter.Write(stringWriter.ToString());

            htmlTextWriter.Close();

            streamWriter.Close();

            stringWriter.Close();          

        }