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List<T>.IList.Add Method

Adds an item to the IList.

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

int IList.Add(
	Object item
)

Parameters

item
Type: System.Object

The Object to add to the IList.

Return Value

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

Implements

IList.Add(Object)

ExceptionCondition
ArgumentException

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

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.

.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
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