NameObjectCollectionBase.KeysCollection.Item[Int32] Property

Reference

Definition

Namespace:: System.Collections.Specialized

Assemblies:: System.dll, System.Collections.Specialized.dll

Assembly:: System.Collections.Specialized.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Source:: NameObjectCollectionBase.cs

Source:: NameObjectCollectionBase.cs

Source:: NameObjectCollectionBase.cs

Important

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Gets the entry at the specified index of the collection.

public:
 property System::String ^ default[int] { System::String ^ get(int index); };

public string this[int index] { get; }

public string? this[int index] { get; }

member this.Item(int) : string

Default Public ReadOnly Property Item(index As Integer) As String

Parameters

index: Int32

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

Property Value

String

The String key of the entry at the specified index of the collection.

Exceptions

ArgumentOutOfRangeException

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

Remarks

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.

Applies to