Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
ICollection(T).Add Method

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

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

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

void ICollection<T>.Add(
	T value
)

Parameters

value
Type: T

The object to add to the ICollection<T>.

Implements

ICollection<T>.Add(T)

ExceptionCondition
NotSupportedException

Always thrown.

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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
Show:
© 2015 Microsoft