KeyedCollection<TKey, TItem>.Remove Method (TKey)
Removes the element with the specified key from the KeyedCollection<TKey, TItem>.
Assembly: mscorlib (in mscorlib.dll)
The key of the element is also removed from the lookup dictionary.
If the number of elements has exceeded the dictionary creation threshold and the KeyedCollection<TKey, TItem> is using a lookup dictionary, it will continue to use a lookup dictionary even though the number of elements is again under the threshold.
To customize the behavior of this method, override the RemoveItem method.
This method is an O(n) operation, where n is Count.
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