How do I write a linq query against a ListCollectionView?

none of these seem to do the tri开发者_如何转开发ck:

var source = myViewModel.MyListCollectionView.Select(x => x as MyType);
var source = myViewModel.MyListCollectionView.Select<object, MyType>(x => x as MyType);
var source = myViewModel.MyListCollectionView.SourceCollection.Select<object, MyType>(x => x as MyType);

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ListCollectionView only implements the non-generic IEnumerable interface. I suspect you want:

var source = myViewModel.MyListCollectionView.Cast<MyType>();

or (if some values won't be of MyType, and that's okay):

var source = myViewModel.MyListCollectionView.OfType<MyType>();

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var source = myViewModel.MyListCollectionView.OfType<MyType>();

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The InternalList property is of type IList so you would be able to write a linq query against that.

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ahhhh found it. you have to use Cast<> first!

var source = myViewModel.MyListCollectionView.Cast<MyType>().Select(p=>p.MyProperty);