CachedFileUpdaterActivatedEventArgs CachedFileUpdaterActivatedEventArgs CachedFileUpdaterActivatedEventArgs CachedFileUpdaterActivatedEventArgs CachedFileUpdaterActivatedEventArgs Class


Provides information about the activated event that fires when the user saves or opens a file that needs updates from the app.

JavaScript This type appears as WebUICachedFileUpdaterActivatedEventArgs.

public : sealed class CachedFileUpdaterActivatedEventArgs : IActivatedEventArgs, IActivatedEventArgsWithUser, ICachedFileUpdaterActivatedEventArgs
struct winrt::Windows::ApplicationModel::Activation::CachedFileUpdaterActivatedEventArgs : IActivatedEventArgs, IActivatedEventArgsWithUser, ICachedFileUpdaterActivatedEventArgs
public sealed class CachedFileUpdaterActivatedEventArgs : IActivatedEventArgs, IActivatedEventArgsWithUser, ICachedFileUpdaterActivatedEventArgs
Public NotInheritable Class CachedFileUpdaterActivatedEventArgs Implements IActivatedEventArgs, IActivatedEventArgsWithUser, ICachedFileUpdaterActivatedEventArgs
// This class does not provide a public constructor.

Windows 10 requirements

Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


The File picker contracts sample demonstrates how to respond to a CachedFileUpdater activation point.

// CachedFileUpdater activated event handler
protected override void OnCachedFileUpdaterActivated(CachedFileUpdaterActivatedEventArgs args)
    var CachedFileUpdaterPage = new SDKTemplate.CachedFileUpdaterPage();

// Overloaded method to respond to CachedFileUpdater events
public void Activate(CachedFileUpdaterActivatedEventArgs args)
            // Get file picker UI
            cachedFileUpdaterUI = args.CachedFileUpdaterUI;

            cachedFileUpdaterUI.FileUpdateRequested += CachedFileUpdaterUI_FileUpdateRequested;
            cachedFileUpdaterUI.UIRequested += CachedFileUpdaterUI_UIRequested;

            switch (cachedFileUpdaterUI.UpdateTarget)
                case CachedFileTarget.Local:
                    scenarios = new List<Scenario> { new Scenario() { Title = "Get latest version", ClassType = typeof(FilePickerContracts.CachedFileUpdater_Local) } };
                case CachedFileTarget.Remote:
                    scenarios = new List<Scenario> { new Scenario() { Title = "Remote file update", ClassType = typeof(FilePickerContracts.CachedFileUpdater_Remote) } };


For C#, args for an OnCachedFileUpdaterActivated override on the Application object references a CachedFileUpdaterActivatedEventArgs object. The OnCachedFileUpdaterActivated override is in the App.xaml.cs file and the Activate method is in the CachedFileUpdaterPage.xaml.cs file of the File picker contracts sample.


Learn more about providing updates for files that your app offers in the Quickstart: Providing file services through and in the Windows.Storage.Pickers.Provider namespace reference.

A CachedFileUpdaterActivatedEventArgs object is passed to the app's activated event handler when the user saves a file that requires content management from the app. This type of activation is indicated by the ActivationKind.CachedFileUpdater value returned by the Kind property.

Apps written in JavaScript must listen for and handle Windows.UI.WebUI.WebUIApplication.activated events.

UWP app using C++, C#, or Visual Basic typically implement activation points by overriding methods of the Application object. The default template app.xaml code-behind files always include an override for OnLaunched, but defining overrides for other activation points such as OnCachedFileUpdaterActivated is up to your app code.

All Application overrides involved in an activation scenario should call Window.Activate in their implementations.

Version history

Windows version SDK version Value added
1607 14393 User


CachedFileUpdaterUI CachedFileUpdaterUI CachedFileUpdaterUI CachedFileUpdaterUI CachedFileUpdaterUI

Gets the letterbox UI of the file picker that is displayed when a file needs updates from the app.

Kind Kind Kind Kind Kind

Gets the activation type.

PreviousExecutionState PreviousExecutionState PreviousExecutionState PreviousExecutionState PreviousExecutionState

Gets the execution state of the app before it was activated.

SplashScreen SplashScreen SplashScreen SplashScreen SplashScreen

Gets a SplashScreen object that provides information about the transition from the splash screen to the activated app.

User User User User User

Gets the user that the app was activated for.

See also