<asp:HyperLinkField DataTextField="trano"  DataNavigateUrlFormatString="dl_type.aspx?trano={0}"  DataNavigateUrlFields="trano" HeaderText="申请单编号" />

Rowdatabound实践中：

if (e.Row.RowIndex != -1)
        
{
            int id = e.Row.RowIndex + 1;
            e.Row.Cells[0].Text = id.ToString();

        }