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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)

member Item : 
        index:int -> string with 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.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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