ICollection(KeyValuePair(TKey, TValue)).Add Method

ReadOnlyDictionary(Of TKey, TValue).ICollection(Of KeyValuePair(Of TKey, TValue)).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.

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

'Declaration
Private Sub Add ( _
	item As KeyValuePair(Of TKey, TValue) _
) Implements ICollection(Of KeyValuePair(Of TKey, TValue)).Add

Parameters

item
Type: System.Collections.Generic.KeyValuePair(Of TKey, TValue)
The object to add to the dictionary.

Implements

ICollection(Of T).Add(T)

ExceptionCondition
NotSupportedException

In all cases.

This member is an explicit interface member implementation. It can be used only when the ReadOnlyDictionary(Of TKey, TValue) instance is cast to an ICollection(Of T) interface. The ICollection(Of T) interface specifies that the Add method should throw a NotSupportedException exception if the collection that implements the interface is read-only.

Windows Phone OS

Supported in: 8.1, 8.0

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