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Collections that do not throw KeyNotFoundException

According to my MCTS 70-536 Pretest Exam the StringDictionary collection does not return KeyNotFoundExcepption when a lookup is performed.  It only returns null. Does anyone know what other Dictionary collections perform in this manner?
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metro156
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metro156
1 Solution
 
Meir RivkinFull stack Software EngineerCommented:
HybridDictionary,NameValueCollection, OrderedDictionary etc
check System.Collections.Specialized Namespace:
http://msdn.microsoft.com/en-us/library/system.collections.specialized.aspx
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