DataGrid: Selecting a single row from a cell

This would select the whole row after selecting the cell

private void dataGrid1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
    DataGrid.HitTestInfo hti = dataGrid1.HitTest(e.X, e.Y);
    if (hti.Type == DataGrid.HitTestType.Cell)
    {
        dataGrid1.CurrentCell = new DataGridCell(hti.Row, hti.Column);
        dataGrid1.Select(hti.Row);
        POI temp = arrayListPOI[dataGrid1.CurrentRowIndex] as POI;
        FormPOI f = new FormPOI(temp);
        f.ShowDialog();
        //MessageBox.Show("RowIndex is: " + dataGrid1.CurrentRowIndex + " POIID: " + temp.poi_id);
    }
}