ApplicationDataCompositeValue Clase

  • Referencia

Definición

Espacio de nombres:
Windows.Storage
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Representa la configuración de la aplicación relacionada que se debe serializar y deserializar de forma atómica.

public ref class ApplicationDataCompositeValue sealed : IIterable<IKeyValuePair<Platform::String ^, Platform::Object ^> ^>, IMap<Platform::String ^, Platform::Object ^>, IObservableMap<Platform::String ^, Platform::Object ^>, IPropertySet
/// [Windows.Foundation.Metadata.Activatable(65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
class ApplicationDataCompositeValue final : IIterable<IKeyValuePair<winrt::hstring, IInspectable const&>>, IMap<winrt::hstring, IInspectable const&>, IObservableMap<winrt::hstring, IInspectable const&>, IPropertySet
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
class ApplicationDataCompositeValue final : IIterable<IKeyValuePair<winrt::hstring, IInspectable const&>>, IMap<winrt::hstring, IInspectable const&>, IObservableMap<winrt::hstring, IInspectable const&>, IPropertySet
[Windows.Foundation.Metadata.Activatable(65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
public sealed class ApplicationDataCompositeValue : IDictionary<string,object>, IEnumerable<KeyValuePair<string,object>>, IObservableMap<string,object>, IPropertySet
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
public sealed class ApplicationDataCompositeValue : IDictionary<string,object>, IEnumerable<KeyValuePair<string,object>>, IObservableMap<string,object>, IPropertySet
function ApplicationDataCompositeValue()
Public NotInheritable Class ApplicationDataCompositeValue
Implements IDictionary(Of String, Object), IEnumerable(Of KeyValuePair(Of String, Object)), IObservableMap(Of String, Object), IPropertySet
Herencia
Object Platform::Object IInspectable ApplicationDataCompositeValue
Atributos
ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute
Implementaciones
IMap<K,V> IDictionary<K,V> IMap<String,Object> IDictionary<String,Object> IMap<Platform::String,Platform::Object> IMap<winrt::hstring,IInspectable> IIterable<IKeyValuePair<K,V>> IEnumerable<KeyValuePair<K,V>> IIterable<IKeyValuePair<String,Object>> IEnumerable<KeyValuePair<String,Object>> IIterable<IKeyValuePair<Platform::String,Platform::Object>> IIterable<IKeyValuePair<winrt::hstring,IInspectable>> IObservableMap<String,Object> IObservableMap<Platform::String,Platform::Object> IObservableMap<winrt::hstring,IInspectable> IPropertySet

Requisitos de Windows

Familia de dispositivos
Windows 10 (se introdujo en la versión 10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (se introdujo en la versión v1.0)

Ejemplos

En este ejemplo se crea y lee una configuración compuesta denominada exampleCompositeSetting.

Llame al método Remove para eliminar la exampleCompositeSetting configuración cuando haya terminado con él.

Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;

// Create a composite setting

Windows.Storage.ApplicationDataCompositeValue composite = new Windows.Storage.ApplicationDataCompositeValue();
composite["intVal"] = 1;
composite["strVal"] = "string";

localSettings.Values["exampleCompositeSetting"] = composite;

// Read data from a composite setting

Windows.Storage.ApplicationDataCompositeValue composite = 
   (Windows.Storage.ApplicationDataCompositeValue)localSettings.Values["exampleCompositeSetting"];

if (composite == null)
{
   // No data
}
else
{
   // Access data in composite["intVal"] and composite["strVal"]
}

// Delete a composite setting

localSettings.Values.Remove("exampleCompositeSetting");

Windows::Storage::ApplicationDataContainer localSettings{
    Windows::Storage::ApplicationData::Current().LocalSettings() };
auto values{ localSettings.Values() };

{
    // Create a composite setting.
    Windows::Storage::ApplicationDataCompositeValue composite;
    composite.Insert(L"intVal", Windows::Foundation::PropertyValue::CreateInt32(1));
    composite.Insert(L"strVal", Windows::Foundation::PropertyValue::CreateString(L"string"));
    values.Insert(L"exampleCompositeSetting", composite);
}

{
    // Read data from a composite setting.
    Windows::Storage::ApplicationDataCompositeValue composite{ values.Lookup(L"exampleCompositeSetting").as<Windows::Storage::ApplicationDataCompositeValue>() };
    if (composite == nullptr)
    {
        // No data
    }
    else
    {
        int32_t one{ winrt::unbox_value<int32_t>(composite.Lookup(L"intVal")) };
        winrt::hstring hello{ winrt::unbox_value<winrt::hstring>(composite.Lookup(L"strVal")) };
    }
}

// Delete a composite setting.
values.Remove(L"exampleCompositeSetting");

ApplicationDataContainer^ localSettings = ApplicationData::Current->LocalSettings;

// Create a composite setting

ApplicationDataCompositeValue^ composite = ref new ApplicationDataCompositeValue();
composite->Insert("intVal", dynamic_cast<PropertyValue^>(PropertyValue::CreateInt32(1)));
composite->Insert("strVal", dynamic_cast<PropertyValue^>(PropertyValue::CreateString("string")));

auto values = localSettings->Values;
values->Insert("exampleCompositeSetting", composite);

// Read data from a composite setting

composite = safe_cast<ApplicationDataCompositeValue^>(localSettings->Values->Lookup("exampleCompositeSetting"));

if (composite == nullptr)
{
   // No data
}
else
{
   int one = safe_cast<IPropertyValue^>(composite->Lookup("intVal"))->GetInt32();
   String^ hello = safe_cast<String^>(composite->Lookup("strVal"));
}

// Delete a composite setting

values->Remove("exampleCompositeSetting");

Dim localSettings As Windows.Storage.ApplicationDataContainer = Windows.Storage.ApplicationData.Current.LocalSettings

' Create a composite setting

Dim composite As New Windows.Storage.ApplicationDataCompositeValue
composite("intVal") = 1
composite("strVal") = "string";

localSettings.Values("exampleCompositeSetting") = composite

' Read data from a composite setting

Dim composite As Windows.Storage.ApplicationDataCompositeValue = 
   CType(localSettings.Values("exampleCompositeSetting"), Windows.Storage.ApplicationDataCompositeValue)

If composite Is Nothing Then
   ' No data
Else
   ' Access data in composite("intVal") and composite("strVal")
End If

' Delete a composite setting

localSettings.Values.Remove("exampleCompositeSetting")

Comentarios

Un valor compuesto se serializa insertándolo en un mapa de configuración y deserializado buscando hacia arriba desde el mapa.

Listas de miembros de la colección

Para JavaScript, ApplicationDataCompositeValue admite el uso de un índice para acceder a los elementos.

Constructores

ApplicationDataCompositeValue()

Crea e inicializa una nueva instancia inicialmente vacía del objeto .

Propiedades

Size

Obtiene el número de configuraciones de aplicación relacionadas.

Métodos

Clear()

Quita toda la configuración de la aplicación insertada previamente en el objeto de valor compuesto y devuelve el objeto a su estado vacío.
First()

Recupera un iterador para enumerar la configuración en el valor compuesto.
GetView()

Devuelve una instantánea de solo lectura del contenido del valor compuesto.
HasKey(String)

Determina si hay una configuración de aplicación con la clave especificada.
Insert(String, Object)

Crea o reemplaza una configuración de aplicación.
Lookup(String)

Recupera la configuración de aplicación especificada.
Remove(String)

Quita el valor con la clave especificada.

Eventos

MapChanged

Se produce cuando cambia el mapa.

Se aplica a

Consulte también