C＃WPF更新UI应用程序冻结

Question

In C# we know there is multiple Background thread ... so like that can we create multiple UI thread?

and Multiple UI thread helps to update data in observation collection without freeez?

if No. what is the best way to get data from webservice and update to observation collection..

Code:-

Thread lthrThread = new Thread((ThreadStart)delegate
{
       string Data = DataFromServer()
       this.Dispatcher.BeginInvoke(new Action(() =>
                    {
                        UI freeze here for 5 -10 seconds
                    }));        
});
lthrThread.SetApartmentState(ApartmentState.STA);
lthrThread.Start();

Answer 1

UI thread is main thread.You cannot copy of it.If you call your data on ui thread,your application user interface will not respond until it ends.So,you need to create background thread or task that handles data call from webservices.When you get data from webservice pass it to the main thread (UI). You can use Dispatcher for it.

Application.Current.Dispatcher?.BeginInvoke(new Action(() => {
 // Pass data to UI here.
}));

or you can use async Task which will be more convenient.