IKeyValuePair<K, V> interface

IKeyValuePair<K, V> interface

Represents a key-value pair. This is typically used as a constraint type when you need to encapsulate two type parameters into one to satisfy the constraints of another generic interface.

.NET:  This interface appears as System.Collections.Generic.KeyValuePair<TKey,TValue> (a structure, not an interface). In any case where a Windows Runtime type has implemented IKeyValuePair<K,V>, .NET code can use the APIs of KeyValuePair instead.

Syntax


generic<typename K, typename V>
public interface class IKeyValuePair

Type parameters

K

The type of the keys in each key-value pair.

V

The type of the values in each key-value pair.

Members

The IKeyValuePair interface inherits from the IUnknown interface. IKeyValuePair also has these types of members:

Properties

The IKeyValuePair interface has these properties.

PropertyAccess typeDescription

Key

Read-only

Gets the key of the key-value pair.

Value

Read-only

Gets the value of the key-value pair.

 

Remarks

When programming with .NET, this interface is hidden and developers should use the System.Collections.Generic.KeyValuePair<TKey,TValue> structure. In any case where a Windows Runtime type has implemented IKeyValuePair<K,V>, including when interfaces have inherited IKeyValuePair<K,V> or used it as an inner constraint, .NET code can treat it as a .NET KeyValuePair.

Key-value pairs are used in the IMap<K,V> interface, when it inherits IIterable<T>. Practical implementations of IMap<K,V> are iterable, and iterating or calling First/Current explicitly will return instances of IKeyValuePair<K,V> using the same constraints as does the IMap<K,V> implementation.

Requirements (Windows 10 device family)

Device family

Universal, introduced version 10.0.10240.0

API contract

Windows.Foundation.FoundationContract, introduced version 1.0

Namespace

Windows::Foundation::Collections

Metadata

Windows.Foundation.FoundationContract.winmd

Requirements (Windows 8.x and Windows Phone 8.x)

Minimum supported client

Windows 8

Minimum supported server

Windows Server 2012

Minimum supported phone

Windows Phone 8

Namespace

Windows::Foundation::Collections

Metadata

Windows.winmd

Attributes

[Version(0x06020000)]

See also

IMap<K,V>
KeyValuePair<TKey,TValue>

 

 

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