static void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Error != null)
{
//an exception happened. ignore the update
}
else
{
UpdaterInfo info = e.Result as UpdaterInfo;
if (info.result != info.currentVersion)
{
string msg = "An update (from " + info.currentVersion + " to " + info.result + ") of " + info.productName + " is available online. Do you want to install the update?";
MessageBoxResult result = MessageBox.Show(msg, "Updater", MessageBoxButton.YesNo, MessageBoxImage.Information);
if (result == MessageBoxResult.Yes)
{
string installer = baseSiteAddress + info.installerFile;
try
{
Process.Start("explorer.exe", installer);
info.callback();
}
catch (Exception)
{
}
}
}
}
}
static void worker_DoWork(object sender, DoWorkEventArgs e)
{
UpdaterInfo info = e.Argument as UpdaterInfo;
string url = baseSiteAddress + info.versionFile;
string availableVersion = string.Empty;
using (XmlReader reader = XmlReader.Create(url))
{
reader.ReadToFollowing("Version");
availableVersion = reader.GetAttribute("Available");
reader.Close();
}
info.result = availableVersion;
e.Result = info;
}
public static void DoUpdate(string productName, string currentVersion, string versionFile, string installerFile, UpdateFiredDelegate callback)
{
BackgroundWorker worker = new BackgroundWorker();
worker.WorkerReportsProgress = false;
worker.WorkerSupportsCancellation = false;
worker.DoWork += new DoWorkEventHandler(worker_DoWork);
worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted);
UpdaterInfo info = new UpdaterInfo();
info.productName = productName;
info.currentVersion = currentVersion;
info.versionFile = versionFile;
info.installerFile = installerFile;
info.callback = callback;
worker.RunWorkerAsync(info);
}
/// <summary>
/// Fetches updater information from the remote update service.
/// </summary>
/// <returns></returns>
public UpdaterInfo FetchUpdaterInfo()
{
// Create HTTP POST request to the predefined check-in URL
HttpWebRequest request = HttpWebRequest.CreateHttp(Configuration.CHECKIN_URI);
request.Accept = "application/xml";
request.Method = "GET";
// Get the response stream and check the status code and content type
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode != HttpStatusCode.OK)
{
// Something went wrong, server did not send 200 OK
throw new InvalidOperationException("Server did not respond with 200 OK");
}
// Deserialize response stream from the XML into CheckinResult
DataContractSerializer xmlSerializer = new DataContractSerializer(typeof(UpdaterInfo));
UpdaterInfo result = (UpdaterInfo)xmlSerializer.ReadObject(response.GetResponseStream());
return(result);
}
