How can I sort ObservableCollection?

Question

I've tried:

Persons = from i in Persons orderby i.Age select i;

But I cant convert Linqs System.Linq.IOrderedEnumerable to ObservableCollection<Person>.

score 19 · Accepted Answer · answered May 15 '13 at 10:06

19

You just need to create a new instance of it.

Persons = new ObservableCollection<Person>(from i in Persons orderby i.Age select i);

answered May 15 '13 at 10:06

PhonicUK

18

This may break any binding that's using the `ObservableCollection`. – David S. May 15 '13 at 10:13
1

@DavidS if the class containing it implements `IPropertyNotifyChanged` and the property for the collection is set up properly then it shouldn't be an issue. – PhonicUK May 15 '13 at 10:16
it doesn't break anything, you have only to use some class for notify the update of the data – Piero Alberto Jun 23 '15 at 14:00
There really isn't any point to using an `ObservableCollection` if you're going to replace the whole thing each time. – geniusburger Apr 09 '17 at 03:36

score 1 · Answer 2 · answered May 15 '13 at 10:07

1

An ObservableCollection can take in an IEnumerable<T> (i.e, in this instance, your IOrderedEnumerable) from it's constructor:

answered May 15 '13 at 10:07

Arran

score 0 · Answer 3 · answered May 15 '13 at 10:06

0

You might want to simply create a new ObservableCollection from the sorted enumerable.

answered May 15 '13 at 10:06

ken2k

3 Answers3