ApplicationDataCompositeValue Classe

Definição

Representa as configurações de aplicativo relacionadas que devem ser serializadas e desserializadas atomicamente.

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
Herança
Object Platform::Object IInspectable ApplicationDataCompositeValue
Atributos
Implementações
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 do Windows

Família de dispositivos
Windows 10 (introduzida na 10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduzida na v1.0)

Exemplos

Este exemplo cria e lê uma configuração composta chamada exampleCompositeSetting.

Chame o método Remove para excluir a exampleCompositeSetting configuração quando terminar de fazer isso.

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")

Comentários

Uma configuração composta é serializada inserindo-a em um mapa de configurações e desserializada pesquisando-a no mapa.

Listas de membros da coleção

Para JavaScript, ApplicationDataCompositeValue dá suporte ao uso de um índice para acessar itens.

Construtores

ApplicationDataCompositeValue()

Cria e inicializa uma nova instância, inicialmente vazia, do objeto .

Propriedades

Size

Obtém o número de configurações de aplicativo relacionadas.

Métodos

Clear()

Remove todas as configurações de aplicativo inseridas anteriormente no objeto de valor composto, retornando o objeto para seu estado vazio.

First()

Recupera um iterador para enumerar as configurações no valor composto.

GetView()

Retorna uma instantâneo somente leitura do conteúdo do valor composto.

HasKey(String)

Determina se há uma configuração de aplicativo com a chave especificada.

Insert(String, Object)

Cria ou substitui uma configuração de aplicativo.

Lookup(String)

Recupera a configuração de aplicativo especificada.

Remove(String)

Remove o valor com a chave especificada.

Eventos

MapChanged

Ocorre quando o mapa é alterado.

Aplica-se a

Confira também