ReadOnlyDictionary<TKey, TValue>.IDictionary<TKey, TValue>.Add Method (TKey, TValue)

.NET Framework (current version)

Throws a NotSupportedException exception in all cases.

Namespace:   System.Collections.ObjectModel
Assembly:  mscorlib (in mscorlib.dll)

void IDictionary<TKey, TValue>.Add(
	TKey key,
	TValue value


Type: TKey

The object to use as the key of the element to add.

Type: TValue

The object to use as the value of the element to add.

Exception Condition

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<TKey, TValue> interface. The IDictionary<TKey, TValue> interface specifies that the Add method should throw a NotSupportedException exception if the collection that implements the interface is read-only.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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