How to fix header of gridview when scroll bar present

Refer

GridView with Fixed Header and Scroll Bar[^]

http://stackoverflow.com/questions/17990435/fixing-gridview-header-while-scrolling[^]

you Dont have any built in feature to do this you need to add a table and in that you need to add two rows one for headeer and another for grid and makinf the girdviews property to show header to false and allow scrollable.

<pre lang="HTML">
<table> 
<tr>
<td>
<!-- your grid header goes here -->

</td></tr>
<tr>
<td>
<!-- your grid content goes here. make your grid view show header property to false and allow scrollable to true-->
</td>
</tr>
</table>