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ListBox.ObjectCollection.IList.Add Method

This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.

Adds an object to the ListBox class.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

int IList.Add(
	Object item
)

Parameters

item
Type: System.Object

The object to be added to the ListBox.

Return Value

Type: System.Int32

Implements

IList.Add(Object)

ExceptionCondition
ArgumentNullException

item is null.

ArgumentException

The current ListBox has a data source.

SystemException

There is insufficient space available to store the new item.

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

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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