binding data to one GridView from two different tables.

add this two tables data in one GridView
One of the ways: Create a new datatable - third one. Add data from first & second to it.
First add columns of datatable 1 & then datatable 2. Next, add data from each tables to this one.
Once done, use the new datatable as a datasource for grid.
 
For a similar schema datatable, use DataTable.Merge Method[^]

Read this article
 
http://www.aspnettutorials.com/tutorials/database/bind-mult-table-gridview-asp4.aspx[^]
http://www.aspdotnetcodes.com/Parent_Child_GridView_DetailsView.aspx[^]