Sort ObservableCollection - what is the best approach?

Question

I have a ObservableCollection , where MyData is a class with 4 properties i.e. int id, string name, bool IsSelected, string IsVisible.

This ObservableCollection is b

Answer 1

ICollectionView seems to be a perfect fit for this. It was designed specifically for sorting, filtering and grouping of a collection without modifying the original collection.

You can get an instance of ICollectionView for your collection using the following code:

var sortedCities  = CollectionViewSource.GetDefaultView(City);

Then you can setup sorting by adding instances of SortDescription type to the ICollectionView.SortDescriptions collection:

sortedCities.SortDescriptions.Add(new SortDescription("IsSelected", ListSortDirection.Descending));
sortedCities.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Ascending));

Then you can bind your ComboBox directly to the collection view (instead of City collection) and it will display already sorted data.