asp.net - Changing the columns titles on a GridView if I set the datasource on codebehind? -

how set gridview category columns titles manually if i'm databinding manually?

namespace workforce {     public partial class webform1 : system.web.ui.page     {         protected void page_load(object sender, eventargs e)         {              var s = work.datalayer.connection("test");              var x = work.datalayer.getcourselist(s);             gridview1.datasource = x;             gridview1.databind();          }     } } 

in design view, there data source id i'm not using.

how this

gridview1.headerrow.cells[0].text = "new header";