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.

possible duplicate of [ObservableCollection that also monitors changes on the elements in collection](http://stackoverflow.com/questions/269073/observablecollection-that-also-monitors-changes-on-the-elements-in-collection) — Kyle Rosendo, May 11 '10 at 06:20
Databind the textbox to a property of your viewmodel. When you recreate your custom text, you post that property change. Are you asking how you do data binding to a vm implementing INotifyPropertyChanged? — Wallstreet Programmer, May 11 '10 at 18:59

score 5 · Answer 1 · edited Oct 23 '17 at 10:27

5

Use the CollectionChanged property from ObservableCollection.

edited Oct 23 '17 at 10:27

Igor Popov

answered May 11 '10 at 06:56

Kishore Kumar

1 Answers1