How To create Header of gridview dynamically?

In .cs file where you use sql query for gridview datasource like

select id, name,email from tablename 

By default query column name is your gridview header if you want to change it then you can use query as

select id as ID , name as [Customer Name] , email as Email from tablename

Please dont forget to Mark it as ans if you get help from it
Thanks
Hemant Singh

Your question is confusing. You say you have written some code in .cs file but do not know what to write in .aspx file? The title suggest you want to create gridview's header dynamically. For that bit try the following code:

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
GridView grd = (GridView)sender;

GridViewRow HeaderRow = new GridViewRow(-1, -1, DataControlRowType.Header, DataControlRowState.Insert);

TableCell HeaderCell = new TableCell();
HeaderCell.Text = "First Column";
HeaderCell.Style["font-weight"] = "bold";
HeaderRow.Cells.Add(HeaderCell);

HeaderCell = new TableCell();
HeaderCell.Text = "Second Column";
HeaderCell.Style["font-weight"] = "bold";
HeaderRow.Cells.Add(HeaderCell);

HeaderCell = new TableCell();
HeaderCell.Text = "Third Column";
HeaderCell.Style["font-weight"] = "bold";
HeaderRow.Cells.Add(HeaderCell);

grd.Controls[0].Controls.AddAt(0, HeaderRow);
}
}

For any other requirement than this, please edit your question and post again.

check this link
http://bytes.com/topic/asp-net/answers/739490-how-can-i-make-gridview-header-dynamic[^]