FileUpdateRequest Class

Reference

Definition

Namespace:: Windows.Storage.Provider

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Edit

Provides information about a requested file update so that the app can complete the request.

public ref class FileUpdateRequest sealed

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
class FileUpdateRequest final

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
public sealed class FileUpdateRequest

Public NotInheritable Class FileUpdateRequest

Inheritance: Object Platform::Object IInspectable FileUpdateRequest

Attributes: ContractVersionAttribute

Windows requirements

Device family	Windows 10 (introduced in 10.0.10240.0 - for Xbox, see UWP features that aren't yet supported on Xbox)
API contract	Windows.Foundation.UniversalApiContract (introduced in v1.0)

Examples

The File picker contracts sample demonstrates how to respond to a FileUpdateRequested event, including how to use Request to get the FileUpdateRequest.

// Event handler
void CachedFileUpdaterUI_FileUpdateRequested(CachedFileUpdaterUI sender, FileUpdateRequestedEventArgs args)
{
    fileUpdateRequest = args.Request;
    fileUpdateRequestDeferral = fileUpdateRequest.GetDeferral();
    switch (cachedFileUpdaterUI.UIStatus)
    {
        case UIStatus.Hidden:
            fileUpdateRequest.Status = FileUpdateStatus.UserInputNeeded;
            fileUpdateRequestDeferral.Complete();
            break;
        case UIStatus.Visible:
            break;
        case UIStatus.Unavailable:
            fileUpdateRequest.Status = FileUpdateStatus.Failed;
            fileUpdateRequestDeferral.Complete();
            break;
    }
}

// Register for the event
cachedFileUpdaterUI.FileUpdateRequested += CachedFileUpdaterUI_FileUpdateRequested;

args contains a FileUpdateRequestedEventArgs object.

Remarks

If your app participates in the Cached File Updater contract, use this class to respond when Windows fires FileUpdateRequested events to request file updates. You can access this class from your event handler using the FileUpdateRequestedEventArgs.Request property. As a part of your response to a FileUpdateRequested event, you must set the Status property of this class to indicate the status of the update.

Learn more about responding to update requests in FileUpdateRequested and FileUpdateRequestedEventArgs.

If your app can't complete the update before returning from its FileUpdateRequested event handler, you can use the GetDeferral property to finish the update asynchronously.

Properties

ContentId	Gets the unique identifier used to associate the local version of a file with the corresponding remote version.
File	Gets a StorageFile object that represents the locally cached copy of the file to update.
Status	Gets or sets the status of the update. This property is set in response to a FileUpdateRequested event.
UserInputNeededMessage	Gets or sets a message to the user indicating that user input is needed to complete the FileUpdateRequest.

Methods

GetDeferral()	Gets an object used to complete an update asynchronously.
UpdateLocalFile(IStorageFile)	Provide a new version of the local file to represent the remote file.

Applies to

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