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List<T>.IList.Add Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Adds an item to the IList.

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

Syntax

'Declaration
Private Function Add ( _
    item As Object _
) As Integer Implements IList.Add

int IList.Add(
    Object item
)

Parameters

Return Value

Type: System.Int32
The position into which the new element was inserted.

Implements

IList.Add(Object)

Exceptions

Exception Condition
ArgumentException

item is of a type that is not assignable to the IList.

Remarks

If Count is less than Capacity, this method is an O(1) operation. If the capacity needs to be increased to accommodate the new element, this method becomes an O(n) operation, where n is Count.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.