Collection<'T>.IList.Item Property (Int32)


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Gets or sets the element at the specified index.

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

private abstract Item : 
        index:int -> Object with get, set
private override Item : 
        index:int -> Object with get, set


Type: System.Int32

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

Property Value

Type: System.Object

The element at the specified index.

Exception Condition

index is not a valid index in the IList.


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

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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