private void onToInterest(object sender, EventArgs e)
{
int iSel = lbGroups.SelectedIndex;
if (-1 == iSel)
{
return;
}
DCGroup gp = lbGroups.Items[iSel] as DCGroup;
PLMPackServiceClient client = WCFClientSingleton.Instance.Client;
client.AddInterest(gp.ID);
Refill();
}