CollectionBase.RemoveAt(Int32) Method

Definition

Namespace:

System.Collections

Assembly:

System.Collections.NonGeneric.dll

Source:

CollectionBase.cs

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

public:
 virtual void RemoveAt(int index);

public void RemoveAt (int index);

abstract member RemoveAt : int -> unit
override this.RemoveAt : int -> unit

Public Sub RemoveAt (index As Integer)

Parameters

index

Int32

The zero-based index of the element to remove.

Implements

RemoveAt(Int32)

Exceptions

ArgumentOutOfRangeException

index is less than zero.

-or-

index is equal to or greater than Count.

Remarks

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 Inheritors

This method calls OnValidate(Object), OnRemove(Int32, Object), and OnRemoveComplete(Int32, Object).