How to have a IEnumerable.ToObservableCollection()?

Question

I know I can create a List<T> from IEnumerable<T> by doing
myEnumerableCollection.ToList(), but how could I implement the same thing for an ObservableCollection<T> ?

dup? http://stackoverflow.com/questions/3559821/how-to-convert-ienumerable-to-observablecollection — kenny, Jun 19 '12 at 15:11
Why do you guys expect upvotes from him since you downvote the question? — Piotr Justyna, Jun 19 '12 at 15:17

score 9 · Accepted Answer · answered Jun 19 '12 at 15:11

What you're looking for is extension methods.

You can extend the IEnumerable<T> type like this:

namespace myNameSpace
{
    public static class LinqExtensions
    {
       public static ObservableCollection<T> ToObservableCollection<T>(this IEnumerable<T> _LinqResult)
       {
          return new ObservableCollection<T>(_LinqResult);              
       }
    }
}

Don't forget to add the using directive in classes you want to use this in (i.e: using myNameSpace;)

score 5 · Answer 2 · answered Jun 19 '12 at 15:11

5

Why would you need to cast it? That's syntactic sugar for common operations.

var observableCollection = new ObservableCollection<object>(regularCollection);

answered Jun 19 '12 at 15:11

Trevor Elliott

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score 1 · Answer 3 · answered Jun 19 '12 at 15:14

1

this works for me:

 List<string> ll = new List<string> { "a", "b","c" };
 ObservableCollection<string> oc = new ObservableCollection<string>(ll);

answered Jun 19 '12 at 15:14

Yoav

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score 0 · Answer 4 · answered Jun 19 '12 at 15:11

0

You have to create new ObservableCollection instance populated with your collection (IEnumerable).

answered Jun 19 '12 at 15:11

Piotr Justyna

4,888
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How to have a IEnumerable.ToObservableCollection()?

4 Answers4