SortedDictionary<TKey,TValue>.KeyCollection.ICollection<TKey>.Add Method   
Definition
Important
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Adds an item to the ICollection<T>. This implementation always throws a NotSupportedException.
 virtual void System.Collections.Generic.ICollection<TKey>.Add(TKey item) = System::Collections::Generic::ICollection<TKey>::Add;void ICollection<TKey>.Add(TKey item);abstract member System.Collections.Generic.ICollection<TKey>.Add : 'Key -> unit
override this.System.Collections.Generic.ICollection<TKey>.Add : 'Key -> unitSub Add (item As TKey) Implements ICollection(Of TKey).AddParameters
- item
- TKey
The object to add to the ICollection<T>.
Implements
Exceptions
Always thrown; the collection is read-only.