ReadOnlyDictionary<TKey,TValue>.KeyCollection.ICollection<TKey>.Add Method
Definition
Important
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Throws a NotSupportedException exception in all cases.
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 collection.
Implements
Exceptions
In all cases.
Remarks
This member is an explicit interface member implementation. It can be used only when the ReadOnlyDictionary<TKey,TValue>.KeyCollection instance is cast to an ICollection<T> interface. The ICollection<T> interface specifies that the Add method should throw a NotSupportedException exception if the collection that implements the interface is read-only.
Applies to
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