why does an event handler never gets called if its added within a loop on an ienumerable
Posted
by André Carvalho
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or by André Carvalho
Published on 2010-03-17T12:58:20Z
Indexed on
2010/03/17
13:01 UTC
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.NET
|ienumerable
For instance:
IEnumerable<MyType> list = someCollection.Select(i => new MyType(i));
foreach (var item in list)
item.PropertyChanged += item_PropertyChanged; <-- this never gets called
Bu if list is assigned like
list = someCollection.Select(i => new MyType(i)).ToArray();
the event handler does get called..
Why? (i imagine it has something to do with the fact that a linq query is lazy, but the fact of looping through the result isn't enough??)
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