private static void BackgroundWorkerDoWork(object sender, DoWorkEventArgs e)
{
var mainAssembly = Assembly.GetEntryAssembly();
var companyAttribute = (AssemblyCompanyAttribute) GetAttribute(mainAssembly, typeof (AssemblyCompanyAttribute));
var titleAttribute = (AssemblyTitleAttribute) GetAttribute(mainAssembly, typeof (AssemblyTitleAttribute));
AppTitle = titleAttribute != null ? titleAttribute.Title : mainAssembly.GetName().Name;
var appCompany = companyAttribute != null ? companyAttribute.Company : "";
RegistryLocation = !string.IsNullOrEmpty(appCompany) ? string.Format(@"Software\{0}\{1}\AutoUpdater", appCompany, AppTitle) : string.Format(@"Software\{0}\AutoUpdater", AppTitle);
RegistryKey updateKey = Registry.CurrentUser.OpenSubKey(RegistryLocation);
if (updateKey != null)
{
object remindLaterTime = updateKey.GetValue("remindlater");
if (remindLaterTime != null)
{
DateTime remindLater = Convert.ToDateTime(remindLaterTime.ToString(), CultureInfo.CreateSpecificCulture("en-US"));
int compareResult = DateTime.Compare(DateTime.Now, remindLater);
if (compareResult < 0)
{
var updateForm = new UpdateForm(true);
updateForm.SetTimer(remindLater);
return;
}
}
}
InstalledVersion = mainAssembly.GetName().Version;
WebRequest webRequest = WebRequest.Create(AppCastURL);
webRequest.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
WebResponse webResponse;
try
{
webResponse = webRequest.GetResponse();
}
catch (Exception)
{
return;
}
Stream appCastStream = webResponse.GetResponseStream();
var receivedAppCastDocument = new XmlDocument();
if (appCastStream != null) receivedAppCastDocument.Load(appCastStream);
else return;
XmlNodeList appCastItems = receivedAppCastDocument.SelectNodes("item");
if (appCastItems != null)
foreach (XmlNode item in appCastItems)
{
XmlNode appCastVersion = item.SelectSingleNode("version");
if (appCastVersion != null)
{
String appVersion = appCastVersion.InnerText;
var version = new Version(appVersion);
if (version <= InstalledVersion)
continue;
CurrentVersion = version;
}
else
continue;
XmlNode appCastTitle = item.SelectSingleNode("title");
DialogTitle = appCastTitle != null ? appCastTitle.InnerText : "";
XmlNode appCastChangeLog = item.SelectSingleNode("changelog");
ChangeLogURL = appCastChangeLog != null ? appCastChangeLog.InnerText : "";
XmlNode appCastUrl = item.SelectSingleNode("url");
DownloadURL = appCastUrl != null ? appCastUrl.InnerText : "";
}
if (updateKey != null)
{
object skip = updateKey.GetValue("skip");
object applicationVersion = updateKey.GetValue("version");
if (skip != null && applicationVersion != null)
{
string skipValue = skip.ToString();
var skipVersion = new Version(applicationVersion.ToString());
if (skipValue.Equals("1") && CurrentVersion <= skipVersion)
return;
if (CurrentVersion > skipVersion)
{
RegistryKey updateKeyWrite = Registry.CurrentUser.CreateSubKey(RegistryLocation);
if (updateKeyWrite != null)
{
updateKeyWrite.SetValue("version", CurrentVersion.ToString());
updateKeyWrite.SetValue("skip", 0);
}
}
}
updateKey.Close();
}
if (CurrentVersion == null)
return;
if (CurrentVersion > InstalledVersion)
{
var thread = new Thread(ShowUI);
thread.CurrentCulture = thread.CurrentUICulture = CurrentCulture ?? System.Windows.Forms.Application.CurrentCulture;
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
}
}
private static void ShowUI()
{
var updateForm = new UpdateForm();
updateForm.ShowDialog();
}