如何在Windows Phone 8中检查应用程序是否已更新或全新安装？

Question

我正在Windows Phone 8中开发应用程序。是否可以通过某些应用程序数据确定该设备上是全新安装还是已更新的应用程序？

Answer 1

string currentAppVer = string.Empty;
var xmlReaderSettings = new XmlReaderSettings { XmlResolver = new XmlXapResolver() };
using (var xmlReader = XmlReader.Create("WMAppManifest.xml", xmlReaderSettings))
{
     xmlReader.ReadToDescendant("App");
     currentAppVer = xmlReader.GetAttribute("Version").Replace(".", "");
}

try
{
     if ((Convert.ToInt32(currentAppVer)) < (Convert.ToInt32(response.appVersion)))
     {
          MarketplaceDetailTask marketplaceDetailTask = new MarketplaceDetailTask();
          marketplaceDetailTask.ContentIdentifier = App.appContentIdentifier;
          marketplaceDetailTask.ContentType = MarketplaceContentType.Applications;
          marketplaceDetailTask.Show();
          Application.Current.Terminate();
     }
}
catch (Exception ex)
{ }

Where response.appVersion is the Application Version that you can maintain in IsolatedStorageSettings OR in Database...