private static object CheckUpdate(Assembly mainAssembly)
{
var companyAttribute =
(AssemblyCompanyAttribute)GetAttribute(mainAssembly, typeof(AssemblyCompanyAttribute));
string appCompany = companyAttribute != null ? companyAttribute.Company : "";
if (string.IsNullOrEmpty(AppTitle))
{
var titleAttribute =
(AssemblyTitleAttribute)GetAttribute(mainAssembly, typeof(AssemblyTitleAttribute));
AppTitle = titleAttribute != null ? titleAttribute.Title : mainAssembly.GetName().Name;
}
string registryLocation = !string.IsNullOrEmpty(appCompany)
? $@"Software\{appCompany}\{AppTitle}\AutoUpdater"
: $@"Software\{AppTitle}\AutoUpdater";
if (PersistenceProvider == null)
{
PersistenceProvider = new RegistryPersistenceProvider(registryLocation);
}
BaseUri = new Uri(AppCastURL);
UpdateInfoEventArgs args;
using (MyWebClient client = GetWebClient(BaseUri, BasicAuthXML))
{
string xml = client.DownloadString(BaseUri);
if (ParseUpdateInfoEvent == null)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(UpdateInfoEventArgs));
XmlTextReader xmlTextReader = new XmlTextReader(new StringReader(xml))
{
XmlResolver = null
};
args = (UpdateInfoEventArgs)xmlSerializer.Deserialize(xmlTextReader);
}
else
{
ParseUpdateInfoEventArgs parseArgs = new ParseUpdateInfoEventArgs(xml);
ParseUpdateInfoEvent(parseArgs);
args = parseArgs.UpdateInfo;
}
}
if (string.IsNullOrEmpty(args.CurrentVersion) || string.IsNullOrEmpty(args.DownloadURL))
{
throw new MissingFieldException();
}
args.InstalledVersion = mainAssembly.GetName().Version;
args.IsUpdateAvailable = new Version(args.CurrentVersion) > mainAssembly.GetName().Version;
if (!Mandatory)
{
if (string.IsNullOrEmpty(args.Mandatory.MinimumVersion) ||
args.InstalledVersion < new Version(args.Mandatory.MinimumVersion))
{
Mandatory = args.Mandatory.Value;
UpdateMode = args.Mandatory.UpdateMode;
}
}
if (Mandatory)
{
ShowRemindLaterButton = false;
ShowSkipButton = false;
}
else
{
// Read the persisted state from the persistence provider.
// This method makes the persistence handling independent from the storage method.
var skippedVersion = PersistenceProvider.GetSkippedVersion();
if (skippedVersion != null)
{
var currentVersion = new Version(args.CurrentVersion);
if (currentVersion <= skippedVersion)
{
return(null);
}
if (currentVersion > skippedVersion)
{
// Update the persisted state. Its no longer makes sense to have this flag set as we are working on a newer application version.
PersistenceProvider.SetSkippedVersion(null);
}
}
var remindLaterAt = PersistenceProvider.GetRemindLater();
if (remindLaterAt != null)
{
int compareResult = DateTime.Compare(DateTime.Now, remindLaterAt.Value);
if (compareResult < 0)
{
return(remindLaterAt.Value);
}
}
}
return(args);
}