refer this sample
<asp:GridView runat="server" ID="GridView1" AutoGenerateColumns="false">
<Columns>
<asp:BoundField HeaderText="Category Name " DataField="Cat_Name" />
<asp:HyperLinkField DataTextField="Cat_Name" DataNavigateUrlFields="Cat_Name" DataNavigateUrlFormatString="~/Details.aspx?category={0}"
HeaderText="Details" ItemStyle-Width="150" />
</Columns>
</asp:GridView>
In details page:
public partial class Details : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string categroy = Request.QueryString["category"];
}
}
Reference
Hpyer link column in gridivew