ReadOnlyDictionary<TKey, TValue>.IDictionary.Add Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Throws a NotSupportedException exception in all cases.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- key
- Type: System.Object
The key of the element to add.
- value
- Type: System.Object
The value of the element to add.
Implements
IDictionary.Add(Object, Object)| Exception | Condition |
|---|---|
| NotSupportedException | In all cases. |
This member is an explicit interface member implementation. It can be used only when the ReadOnlyDictionary<TKey, TValue> instance is cast to an IDictionary interface. The IDictionary interface specifies that the Add method should throw a NotSupportedException exception if the collection that implements the interface is read-only.