Finding the row of a DataSource bound to linqDataSource

I have a gridview bound to a linqDataSource control.

How do I access the actual data? I need to find the row of a selected item, so I can set the PageIndex then the DataKey. The main problem is the DataSourceObject line. I can't find a way to grab the actual data collection.

Here's my code ( doesn't work )

protected void btnSelectRig_Click(object sender, EventArgs e)
        {
            //grdLocations.DataBind();
            grdLocations.SelectedIndex = -1;
            DataSourceView o = grdLocations.DataSourceObject.GetView("DefaultView");
            if (grdLocations.DataSourceObject != null)
            {
                List<RigLocation> list = grdLocations.DataSource as List<RigLocation>;


                int i;
                for (i = 0; i < list.Count; i++)
                {
                    if (list[i].RigLocationId == Convert.ToInt32(hidCurrentRigId.Value))
                    {
                        break;
                    }

                }

                grdLocations.PageIndex = i / grdLocations.PageSize;
                grdLocations.SelectedIndex = i % grdLocations.PageSize;

Re: Finding the row of a DataSource bound to linqDataSource

See this link for my answer

http://nickturner.wordpress.com/2012/04/09/finding-the-row-in-a-grid-view-bound-to-a-linqdatasource-control/