private static void RaiseCheckForUpdates(UpdateInfoEventArgs args)
{
var handler = CheckForUpdateEvent;
if (handler != null)
{
handler(args);
}
}
private static void BackgroundWorkerDoWork(object sender, DoWorkEventArgs e)
{
var mainAssembly = Assembly.GetEntryAssembly();
var companyAttribute = GetAttribute <AssemblyCompanyAttribute>(mainAssembly);
var titleAttribute = GetAttribute <AssemblyTitleAttribute>(mainAssembly);
AppTitle = titleAttribute != null ? titleAttribute.Title : mainAssembly.GetName().Name;
InstalledVersion = mainAssembly.GetName().Version;
var appCompany = companyAttribute != null ? companyAttribute.Company : "";
RegistryLocation = string.IsNullOrEmpty(appCompany)
? string.Format(@"Software\{0}\AutoUpdater", AppTitle)
: string.Format(@"Software\{0}\{1}\AutoUpdater", appCompany, AppTitle);
var updateKey = Registry.CurrentUser.OpenSubKey(RegistryLocation);
if (updateKey != null)
{
var remindLaterTime = updateKey.GetValue("remindlater");
if (remindLaterTime != null)
{
var remindLater = Convert.ToDateTime(
remindLaterTime.ToString(),
CultureInfo.CreateSpecificCulture("en-US"));
var compareResult = DateTime.Compare(DateTime.Now, remindLater);
if (compareResult < 0)
{
var mainWindow = new MainWindow(true);
mainWindow.SetTimer(remindLater);
return;
}
}
}
var webRequest = WebRequest.Create(AppCastUrl);
webRequest.CachePolicy = new HttpRequestCachePolicy(
HttpRequestCacheLevel.NoCacheNoStore);
WebResponse webResponse;
try
{
webResponse = webRequest.GetResponse();
}
catch (Exception)
{
RaiseCheckForUpdates(null);
return;
}
var receivedAppCastDocument = new XmlDocument();
var appCastStream = webResponse.GetResponseStream();
if (appCastStream != null)
{
receivedAppCastDocument.Load(appCastStream);
}
else
{
RaiseCheckForUpdates(null);
return;
}
ReadAppCastItems(receivedAppCastDocument, webResponse);
if (updateKey != null)
{
var skip = updateKey.GetValue("skip");
var applicationVersion = updateKey.GetValue("version");
if (skip != null && applicationVersion != null)
{
var skipValue = skip.ToString();
var skipVersion = new Version(applicationVersion.ToString());
if (skipValue.Equals("1") && CurrentVersion <= skipVersion)
{
return;
}
if (CurrentVersion > skipVersion)
{
var updateKeyWrite = Registry.CurrentUser.CreateSubKey(RegistryLocation);
if (updateKeyWrite != null)
{
updateKeyWrite.SetValue("version", CurrentVersion.ToString());
updateKeyWrite.SetValue("skip", 0);
}
}
}
updateKey.Close();
}
if (CurrentVersion == null)
{
return;
}
var args = new UpdateInfoEventArgs
{
DownloadUrl = DownloadUrl,
ChangelogUrl = ChangeLogUrl,
CurrentVersion = CurrentVersion,
InstalledVersion = InstalledVersion,
IsUpdateAvailable = false
};
if (CurrentVersion > InstalledVersion)
{
args.IsUpdateAvailable = true;
if (CheckForUpdateEvent == null)
{
ShowUi();
}
}
RaiseCheckForUpdates(args);
}