In C# how to get event log data in excel format automatically?

SqlDataAdapter da = new SqlDataAdapter(cmd1);
                 DataTable dt1 = new DataTable();
                 da.Fill(dt1);
                 DataColumnCollection dcCollection = dt1.Columns;

                 Excel.Application ExcelApp = new Excel.Application();
                 Excel.Workbook wb = ExcelApp.Workbooks.Add();

                 int i = 1;

                 int j = 1;
                 //header row
                 foreach (DataColumn col in dt1.Columns)
                 {
                     ExcelApp.Cells[i, j] = col.ColumnName;

                     j++;

                 }

                 i++;

                 //data rows
                 foreach (DataRow row in dt1.Rows)
                 {
                     for (int k = 1; k < dt1.Columns.Count + 1; k++)
                     {
                         ExcelApp.Cells[i, k] = row[k - 1].ToString();
                     }
                     i++;

                 }
                 Microsoft.Office.Interop.Excel.Range rg = (Microsoft.Office.Interop.Excel.Range)ExcelApp.Cells[1,8];
                 rg.EntireColumn.NumberFormat = "MM/DD/YYYY";
                 Microsoft.Office.Interop.Excel.Range rg1 = (Microsoft.Office.Interop.Excel.Range)ExcelApp.Cells[1,9];
                 rg1.EntireColumn.NumberFormat = "MM/DD/YYYY";

                 ExcelApp.Columns.AutoFit();
                //wb.ActiveWorkbook.SaveAs("EmployeeDetails.xls");
                 wb.SaveAs("C:\\EmployeeDetails.xls", Excel.XlFileFormat.xlWorkbookNormal, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
                 ExcelApp.ActiveWorkbook.Saved = true;
                 ExcelApp.Quit();
                 Response.Write("<script>alert('Data Downloaded Successfully ');</script>");