CollectionBase.RemoveAt Method

Removes the element at the specified index of the CollectionBase instance. This method is not overridable.

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

abstract RemoveAt : 
        index:int -> unit  
override RemoveAt : 
        index:int -> unit

Parameters

index
Type: System.Int32

The zero-based index of the element to remove.

Implements

IList.RemoveAt(Int32)

ExceptionCondition
ArgumentOutOfRangeException

index is less than zero.

-or-

index is equal to or greater than Count.

In collections of contiguous elements, such as lists, the elements that follow the removed element move up to occupy the vacated spot. If the collection is indexed, the indexes of the elements that are moved are also updated. This behavior does not apply to collections where elements are conceptually grouped into buckets, such as a hash table.

This method is an O(n) operation, where n is Count.

Notes to Implementers

This method calls OnValidate, OnRemove, and OnRemoveComplete.

.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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