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ReadOnlyCollection.System.Collections.Generic.ICollection<T>.Add Method 

Adds an item to the ICollection. This implementation always throws NotSupportedException.

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

void ICollection<TKey>.Add (
	T value
)
Not applicable.

Parameters

value

The object to add to the ICollection.

Exception typeCondition

NotSupportedException

Always thrown.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

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