Hi Snehal,
By default in the datagrid you have the search button and also there's the default button Export to CSV that you can add in the buttons bar. To allow both to coexist at the same time, you can change the data source to XPath and from there, if the user filters by a specific field and then clicks the Export to CSV, it will generate a CSV file only with the data showing to him with the filters applied.
Hope it helps,
Rui
Hello Snehal,
You can try Export CSV feature also if above given solution will not fulfill your requirements.