/// <summary>
/// Raised by <see cref="updateCheck"/> when a new version has been
/// made available.
/// </summary>
private void updateCheck_UpdateAvailable(object sender, UpdateEventArgs e)
{
this.updateEvent = e;
this.buttonUpdate.Enabled = (e.UpdateUri != null)
&& e.UpdateUri.StartsWith("http");
this.labelUpdateTitle.Text = Resources.IntelStatus_VersionTitle;
this.labelUpdate.Text = String.Format(
CultureInfo.CurrentCulture,
Resources.IntelStatus_Version,
e.OldVersion,
e.NewVersion,
e.UpdateUri);
this.UpdateStatus();
this.notifyIcon.ShowBalloonTip(10000,
Resources.Update_NotificationTitle,
Resources.Update_NotificationText,
ToolTipIcon.Info);
}
/// <summary>
/// Called periodically by <see cref="timer"/> to download
/// the version list and check for updates.
/// </summary>
private void timer_Elapsed(object sender, ElapsedEventArgs e)
{
var requestUri = this.CheckUri;
if (String.IsNullOrEmpty(requestUri)) {
return;
}
// Grab the assembly information
var assemblyName = this.AssemblyName;
var assemblyVersion = this.AssemblyVersion;
if (assemblyName == null || assemblyVersion == null) {
return;
}
try {
// Figure out what the server has available
var doc = XDocument.Load(requestUri);
var newAssembly = doc.Root
.Elements("assembly")
.Select(x => new {
Name = x.Attribute("name"),
Version = x.Attribute("version"),
UpdateUri = x.Attribute("update-uri")
})
.Where(x => (x.Name != null)
&& (x.Name.Value == assemblyName)
&& (x.Version != null))
.Select(x => new {
Version = new Version(x.Version.Value),
UpdateUri = (x.UpdateUri != null) ? x.UpdateUri.Value : null
})
.OrderBy(x => x.Version)
.Last();
// Check if we have an update
if (newAssembly.Version > assemblyVersion) {
var handler = this.UpdateAvailable;
if (handler != null) {
var sync = this.SynchronizationObject;
var args = new UpdateEventArgs(
assemblyVersion,
newAssembly.Version,
newAssembly.UpdateUri);
if ((sync != null) && sync.InvokeRequired) {
sync.BeginInvoke(new Action(() => handler(this, args)), null);
} else {
ThreadPool.QueueUserWorkItem((state) => handler(this, args));
}
}
}
} catch (WebException) {
// Error downloading the document
} catch (FormatException) {
// The user's URI is invalid
} catch (XmlException) {
// Error parsing the XML
} catch (InvalidOperationException) {
// Our assembly isn't listed
}
}