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NameObjectCollectionBase.KeysCollection.Item Property

Gets the entry at the specified index of the collection.

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

public string this[
	int index
] { get; }

Parameters

index
Type: System.Int32

The zero-based index of the entry to locate in the collection.

Property Value

Type: System.String
The String key of the entry at the specified index of the collection.

ExceptionCondition
ArgumentOutOfRangeException

index is outside the valid range of indexes for the collection.

This property provides the ability to access a specific element in the collection by using the following syntax: myCollection[index] (In Visual Basic, myCollection(index)).

The C# language uses the this keyword to define the indexers instead of implementing the Item property. Visual Basic implements 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.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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