GridView linkbutton with query

Question

How should i write this code

 protected void LinkButton1_Click(object sender, EventArgs e)
    {



        SPWeb web = SPContext.Current.Web;

        SPSiteDataQuery query = new SPSiteDataQuery();

        query.Lists = "<Lists>" +
                      "<List ID=" + web.Lists.TryGetList("StaffNews").ID.ToString() + " />" +
                      "<List ID=" + web.Lists.TryGetList("CompanyNews").ID.ToString() + " />" +
                      "<List ID=" + web.Lists.TryGetList("ManagementNews").ID.ToString() + " />" +
                      "</Lists>";


        query.ViewFields = "<FieldRef Name=\"Title\" />" + "<FieldRef Name=\"Authors\" />" + "<FieldRef Name=\"Link\" />" + "<FieldRef Name=\"Contents\" />" + "<FieldRef Name=\"Categories\" />" +
                           "<FieldRef Name=\"Date1\" Nullable=\"TRUE\"/>";
        query.Query = "<OrderBy><FieldRef Name='ID' Ascending='FALSE'></FieldRef></OrderBy>";
        query.Webs = "<Webs Scope=\"SiteCollection\" />";



        query.RowLimit = 5;

        DataTable dt = web.GetSiteData(query);
        DataView dv = new DataView(dt);





        DetailsView1.DataSource = dv;
        DetailsView1.DataBind();


    }

Togethor with this code GridViewRow clickedRow = ((LinkButton)sender).NamingContainer as GridViewRow;