Array.IList.Add Method

Calling this method always throws a NotSupportedException exception.

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

int IList.Add(
	Object value


Type: System.Object

The object to be added to the IList.

Return Value

Type: System.Int32
Adding a value to an array is not supported. No value is returned.




The IList has a fixed size.

Ordinarily, an IList.Add implementation adds a member to a collection. However, because arrays have a fixed size (the IsFixedSize property always returns true), this method always throws a NotSupportedException exception.

This member is an explicit interface member implementation. It can be used only when the Array instance is cast to an IList interface.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.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
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