How to listen changes in Observable collection in WPF?

Question

I have user control in which I have placed a Listview and Richtext box control.

ListView is binded to my custom collection.

Below the listview I placed a richtext box in which I want to display my custom text. The custom text is created from the custom collection.

I want to recreate the custom text whenever any thing change in my custom collection.

How can I acheive this. I have implemented INotifyProperty changed event in my Viewmodel.

In the viewmodel, my custom collection resides.

Answer 1

CollectionChanged porperty in ObservableCollection