wwDbGrid表格数据如何导出到EXCEL(100分)

请教各位:
wwDbGrid表格中的数据如何导出到EXCEL中.
谢谢!

wwDBGrid1.ExportOptions.ExportType:=wwgetSYLK;
wwDBGrid1.ExportOptions.FileName:='DEMO.xls';
wwDBGrid1.ExportOptions.Save;
ShellExecute(Handle, 'OPEN', PChar(wwDBGrid1.ExportOptions.FileName), nil, nil, sw_shownormal);