c# - How do I refactor this IEnumerable<T> to be thread-safe? -

i looking @ skeet's atomicenumerable i'm not sure how integrate current ienumerable exmaple below (http://msmvps.com/blogs/jon_skeet/archive/2009/10/23/iterating-atomically.aspx)

basically want foreach blahs type in thread-safe way.

thanks

so .. foreach on multiple threads ... giving correct order

blahs b = new blahs();

foreach (string s in b) { }

public sealed class blahs :  ienumerable<string> {     private readonly ilist<string> _data = new list<string>() { "blah1", "blah2", "blah3" };      public ienumerator<string> getenumerator()     {         return _data.getenumerator();     }      ienumerator ienumerable.getenumerator()     {         return getenumerator();     } } 

do mean want each thread see same sequence, or between threads, each item should seen once?

are able use .net 4? if so, parallel extensions (e.g. parallel.foreach) friend - it's safer come :)

edit: if want iterate on list in each thread, and nothing going modifying list, thread-safe already. if do need modify list, should create copy of list , iterate on instead.