Cross Thread Exception in PropertyChangedEvent in WPF

Question

I have a ListView that is binded to my custom collection.

At run time , I am updating the certain properties of my entity in my custom collection in my ViewModel. At the same time , I am also doing the custom sorting in the listview.

The custom sorting is applicable when I click on the any column header of the listview.

For example, I am updating the current datetime on my entity on every 5 seconds and simulaneously , I am applying custom sorting based on DateTime.

(The Listview is third party control).

Hence I am doing two operations on my custom collection at the same time.

Should I pass the dispatcher of my control in the view model and call any methods ( which updates any entity in my custom collection ) through UI dispatcher ?

Answer 1

If want to update u r ui u have to use dispatcher, there is no other way to update the ui.

 Dispatcher.BeginInvoke(DispatcherPriority.Background, (Action) delegate{ ///You can update your Ui here });

Answer 2

Are you using your thread only for updating the entity properties? If so, using dispatcher will result in erasing the meaning of using a thread since all the operation will be done by UI thread ultimately. You can better put your sorting logic in a different thread. Some code would help anyways.