如何从字典值中获取ObservableCollection

Question

I have an ObservableCollection<MyClass> myCollection and a Dictionary<int, MyClass> myDictionary .

How would I copy all the Values of Class MyClass from the Dictionary to the ObservableCollection ? Unfortunately this won't work (Cannot implicitly convert type...):

myDictionary = myCollection.Values

And I was hoping for a solution that would perform better than:

       for (int i = 0; i < myDicitonary.Values.Count; i++ )
            myCollection.Add(myDicationary.Values.ElementAt(i));

Answer 1

The observable collection can be created from an IEnumerable.

myCollection = new ObservableCollection<MyClass>(myDictionary.Values)

If you already have the collection created and don't want to create a new one, you'd have to iterate trough myDictionary.Values and manually add each value in the observable collection. Note that this will trigger the collection changed event after each individual add.