Hi
This is very simple...
in aspx page: suppose you have the Shuttle_Facility_Id is in datakey name....
<pre>
<asp:GridView ID="gridShuttleAdmin" runat="server" AutoGenerateColumns="false" DataKeyNames="Shuttle_Facility_Id"
OnRowDataBound="gridShuttleAdmin_RowDataBound"
</pre>
in code behind : in rowdatabound...you fetch it like this.
protected void gridShuttleAdmin_RowDataBound(object sender, GridViewRowEventArgs e)
{
Label lblshuttlefacilityid = (Label)e.Row.FindControl("lblshuttlefacilityid");
LinkButton lbtn = (LinkButton)e.Row.FindControl("lnkviewID");
lbtn.Attributes.Add("onClick", "var sFeatures='dialogHeight: 700px;dialogWidth: 1000px;'; window.showModalDialog('Shuttle_StopDetails.aspx?shuttlefacilityid=" + lblshuttlefacilityid.Text"','',sFeatures);window.document.forms[0].submit();");
}