private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
// Get the BackgroundWorker that raised this event.
BackgroundWorker worker = sender as BackgroundWorker;
CallParameter cp = (CallParameter)e.Argument;
e.Result = cr.LoadHomeModelQuantity_Multithread(cp.stateid.ToString(), cp.areaid.ToString(), cp.groupid.ToString(), cp.brandid.ToString());
}