MaintenanceTrigger Kelas

Definisi

Ruang nama:

Windows.ApplicationModel.Background

Mewakili pemicu pemeliharaan.

public ref class MaintenanceTrigger sealed

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Standard)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
/// [Windows.Foundation.Metadata.Activatable(Windows.ApplicationModel.Background.IMaintenanceTriggerFactory, 65536, "Windows.Foundation.UniversalApiContract")]
class MaintenanceTrigger final

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Standard)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
[Windows.Foundation.Metadata.Activatable(typeof(Windows.ApplicationModel.Background.IMaintenanceTriggerFactory), 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class MaintenanceTrigger

function MaintenanceTrigger(freshnessTime, oneShot)

Public NotInheritable Class MaintenanceTrigger

Warisan

Object Platform::Object IInspectable MaintenanceTrigger

Atribut

ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Penerapan

IBackgroundTrigger

Persyaratan Windows

Rangkaian perangkat	Windows 10 (diperkenalkan dalam 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (diperkenalkan dalam v1.0)

Contoh

Contoh berikut menunjukkan cara membuat dan mendaftarkan pemicu pemeliharaan.

//
// A friendly task name.
//
String name = "ExampleTaskName";

//
// Must be the same entry point that is specified in the manifest.
//
String taskEntryPoint = "ExampleNamespace.ExampleTaskName";

//
// A system trigger that goes off every 15 minutes as long as the device is plugged in to AC power.
//
MaintenanceTrigger trigger = new MaintenanceTrigger(15, false);

//
// Build the background task.
//
BackgroundTaskBuilder builder = new BackgroundTaskBuilder();

builder.Name = name;
builder.TaskEntryPoint = taskEntryPoint;
builder.SetTrigger(trigger);

//
// Register the background task, and get back a BackgroundTaskRegistration object representing the registered task.
//
BackgroundTaskRegistration task = builder.Register();

Keterangan

Tugas latar belakang yang menggunakan pemicu pemeliharaan hanya berjalan ketika sistem terhubung ke daya AC.

Catatan

Kelas ini tidak tangkas, yang berarti Anda perlu mempertimbangkan model utas dan perilaku marshalingnya. Untuk informasi selengkapnya, lihat Threading dan Marshaling (C++/CX) dan Menggunakan objek Windows Runtime di lingkungan multithreaded (.NET).

Konstruktor

MaintenanceTrigger(UInt32, Boolean)

Menginisialisasi instans baru pemicu pemeliharaan.

Properti

FreshnessTime	Mendapatkan interval pemicu pemeliharaan.
OneShot	Mendapatkan apakah pemicu pemeliharaan hanya digunakan sekali atau setiap kali interval FreshnessTime berlalu.