如何檢查應用程序是否已更新或全新安裝在Windows Phone 8中？

Question

我正在開發Windows Phone 8中的一個應用程序。我可以通過某些應用程序數據確定它是否爲該設備上的全新安裝或更新的應用程序？

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) 
{ } 

哪裏response.appVersion是應用程序版本，你可以在IsolatedStorageSettings或數據庫維護...