|
public GetDeferral ( ) : |
||
| Результат | ||
void SetVersionHandler1(SetVersionRequest request)
{
SetVersionDeferral deferral = request.GetDeferral();
uint version = appData.Version;
switch (version)
{
case 0:
// Need to convert data from v0 to v1.
// This sample simulates that conversion by writing a version-specific value.
appData.LocalSettings.Values[settingName] = settingValue1;
break;
case 1:
// Version is already 1. Nothing to do.
break;
default:
throw new Exception("Unexpected ApplicationData Version: " + version);
}
deferral.Complete();
}
internal static void AppDataSetVersion(Windows.Storage.SetVersionRequest request)
{
var deferral = request.GetDeferral();
switch (request.CurrentVersion)
{
case 0:
BaseAlarmSettings.Instance.ConvertVersion0To1();
break;
}
deferral.Complete();
}
/// <summary>
/// Handles the request to set the version of the application data in the application data store.
/// </summary>
/// <param name="request">The set version request.</param>
/// <remarks>
/// Application data migration should be done here.
/// </remarks>
void SetVersionHandler(SetVersionRequest request)
{
SetVersionDeferral deferral = request.GetDeferral();
// Downgrades are not supported...
if (request.DesiredVersion < request.CurrentVersion)
{
ApplicationData.Current.ClearAsync().AsTask().Wait();
}
//if (request.CurrentVersion < 1 && request.DesiredVersion >= 1)
//{
//}
//if (request.CurrentVersion < 2)
//{
//}
//if (request.CurrentVersion < 3)
//{
//}
deferral.Complete();
}
private async void SetVersionHandlerAsync(SetVersionRequest request)
{
SetVersionDeferral deferral = request.GetDeferral();
AppData.CurrentVersion = request.CurrentVersion;
if (request.DesiredVersion == 1)
{
AppData.ClearServicesAsync();
}
else if (request.CurrentVersion <= 1 && request.DesiredVersion > 1)
{
await AppData.CreateSampleServicesAsync();
}
else if (request.CurrentVersion == 2 && request.DesiredVersion > 2)
{
await AppData.UpdateSampleServicesAsync();
}
deferral.Complete();
}