Why Doesn't My ObservableCollection Update When an Item's Property Changes?

ObservableCollection's project attribute change problem

In the code provided, when the ISROWCHECKED is changed, ObservableCollection (ContentList) will not receive notifications. This causes the debugger to stop at the required position.

The reason

The problem lies in the method of tracking the change of ObservableCollection. It only monitors changes in the collection itself, such as adding or deleting items. By default, there will be no change of a single project attribute.

Solution

To solve this problem, you can use the customized ObservableCollection to monitor its project attribute changes. This is a solution to a custom class named TrilyobServableCollection:

By using TrilyobSerVableCollection, your ObservableCollection will receive a notice when the project attribute is changed to allow you to respond in the view model.

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