Collection<T>.IList.Item[Int32] Property

Definition

Namespace:: System.Collections.ObjectModel

Assembly:: System.Runtime.dll

Assemblies:: mscorlib.dll, System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Gets or sets the element at the specified index.

property System::Object ^ System::Collections::IList::Item[int] { System::Object ^ get(int index); void set(int index, System::Object ^ value); };

object System.Collections.IList.Item[int index] { get; set; }

object? System.Collections.IList.Item[int index] { get; set; }

member this.System.Collections.IList.Item(int) : obj with get, set

 Property Item(index As Integer) As Object Implements IList.Item

Parameters

index: Int32

The zero-based index of the element to get or set.

Property Value

Object

The element at the specified index.

Implements

Item[Int32]

Exceptions

ArgumentOutOfRangeException

index is not a valid index in the IList.

ArgumentException

The property is set and value is of a type that is not assignable to the IList.

Remarks

This property provides the ability to access a specific element in the collection by using the following syntax: myCollection[index].

The C# language uses the this keyword to define the indexers instead of implementing the IList.Item[] property. Visual Basic implements IList.Item[] as a default property, which provides the same indexing functionality.

Retrieving the value of this property is an O(1) operation; setting the property is also an O(1) operation.

Applies to