RemoveAt Method

CollectionBase.RemoveAt Method (Int32)

 

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

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

public void RemoveAt(
	int index
)

Parameters

index
Type: System.Int32

The zero-based index of the element to remove.

Exception Condition
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.

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
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