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70-511 · Question #238
70-511 Question #238: Real Exam Question with Answer & Explanation
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Question
You are developing a Windows Presentation Foundation (WPF) application. You build a dictionary that implements INotifyPropertyChanged. You want to use an indexer to bind to the UI. The relevant implementation of the dictionary is as follows. (Line numbers are included for reference only.) You need to ensure that the PropertyChanged event is triggered so that the UI is updated if you modify the collection using the indexer. Which code should you insert at line 17?
Exhibit
Options
- ARaiseEvent PropertyChanged(Me,
- BRaiseEvent PropertyChanged(Me,
- CRaiseEvent PropertyChanged(Me,
- DRaiseEvent PropertyChanged(Me,
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