//**************************************************************
// CheckForUpdates()
// - Checks for an update
// - This is a sync call... normally called by the poller object
// on the poller thread.
//**************************************************************
public bool CheckForUpdates()
{
Debug.WriteLine("APPMANAGER: Checking for updates.");
bool retValue = false;
//If the OnCheckForUpdate event the caller is doing the check
if (OnCheckForUpdate != null)
{
retValue = OnCheckForUpdate(this, new EventArgs());
}
//otherwise do the check ourselves
else
//If versioning is enabled check to see if the version file has changed.
if (ChangeDetectionMode == ChangeDetectionModes.ServerManifestCheck)
{
ServerManifest vm = new ServerManifest();
vm.Load(UpdateUrl);
retValue = vm.IsServerVersionNewer(GetLatestInstalledVersion());
}
//If versioning is not enabled, check the files themselves
else
{
Resource currentResource;
foreach (Object r in Manifest.Resources.ResourceList)
{
currentResource = (Resource)(((DictionaryEntry)r).Value);
string url = UpdateUrl + currentResource.Name;
string FilePath = currentResource.FilePath;
if (WebFileLoader.CheckForFileUpdate(url, FilePath))
{
retValue = true;
}
}
}
//Fire the OnUpdateDetected Event on the UI thread
if (retValue == true)
{
if (OnUpdateDetected != null)
{
foreach (UpdateDetectedEventHandler UC in OnUpdateDetected.GetInvocationList())
{
EventControl.BeginInvoke(UC, new object[] { this, new EventArgs() });
}
}
}
return(retValue);
}
public void MonitorForUpdates(string currentVersion, OnUpdateDetected updateCallback = null, int timerIntervalMs = 24 * 60 * 60 * 1000)
{
if (timerIntervalMs != Timeout.Infinite && timerIntervalMs < _MIN_UPDATE_CHECK_INTERVAL)
{
throw new ArgumentException($"{nameof(timerIntervalMs)} ({timerIntervalMs}) must be less than {_MIN_UPDATE_CHECK_INTERVAL}ms in order to avoid throttling limits");
}
if (_updateTimer != null)
{
_updateTimer.Dispose();
}
var args = new CheckForUpdateParams()
{
CurrentVersion = currentVersion,
Callback = updateCallback
};
_updateTimer = new Timer(CheckForUpdateAsync, args, 0, timerIntervalMs);
}
