ReadOnlyCollection<T>.ICollection<T>.Add(T) Method

Reference

Definition

Namespace:: System.Collections.ObjectModel

Assemblies:: mscorlib.dll, System.Runtime.dll

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: ReadOnlyCollection.cs

Source:: ReadOnlyCollection.cs

Source:: ReadOnlyCollection.cs

Important

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

 virtual void System.Collections.Generic.ICollection<T>.Add(T value) = System::Collections::Generic::ICollection<T>::Add;

void ICollection<T>.Add(T value);

abstract member System.Collections.Generic.ICollection<T>.Add : 'T -> unit
override this.System.Collections.Generic.ICollection<T>.Add : 'T -> unit

Sub Add (value As T) Implements ICollection(Of T).Add

Parameters

value: T

The object to add to the ICollection<T>.

Implements

Add(T)

Exceptions

NotSupportedException

Always thrown.

Remarks

This member is an explicit interface member implementation. It can be used only when the ReadOnlyCollection<T> instance is cast to an ICollection<T> interface.

Applies to

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP	10.0

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