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.

Syntax

public sealed class CachedFileUpdaterActivatedEventArgs : Object,
    ICachedFileUpdaterActivatedEventArgs,
    IActivatedEventArgs

Attributes

MarshalingBehaviorAttribute(Agile)

VersionAttribute(NTDDI_WIN8)

Members

The CachedFileUpdaterActivatedEventArgs class has these types of members:

• Methods
• Properties

Methods

The CachedFileUpdaterActivatedEventArgs class inherits methods from the Object class.

Properties

The CachedFileUpdaterActivatedEventArgs class has these properties.

Remarks

Learn more about providing updates for files that your app offers in the Quickstart: Providing file services through file pickers 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.

Windows Store apps built for Windows 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.

Examples

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();
    CachedFileUpdaterPage.Activate(args);
}

// 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) } };
                    break;
                case CachedFileTarget.Remote:
                    scenarios = new List<Scenario> { new Scenario() { Title = "Remote file update", ClassType = typeof(FilePickerContracts.CachedFileUpdater_Remote) } };
                    break;
            }

            Window.Current.Activate();
        }

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.

Requirements

See also

ActivationKind enumeration

Windows.Storage.Provider namespace

File picker contracts sample

Reference

Windows.UI.Core.CoreApplicationView.Activated event

OnCachedFileUpdaterActivated

Application

Build date: 2/25/2013