A standalone ACT plugin self-updating by date

Act_Plugin_Update.cs

public void InitPlugin(TabPage pluginScreenSpace, Label pluginStatusText)
{
	ActGlobals.oFormActMain.UpdateCheckClicked += oFormActMain_UpdateCheckClicked;
	if (ActGlobals.oFormActMain.GetAutomaticUpdatesAllowed())	// If ACT is set to automatically check for updates, check for updates to the plugin
		new Thread(new ThreadStart(oFormActMain_UpdateCheckClicked)) { IsBackground = true }.Start();	// If we don't put this on a separate thread, web latency will delay the plugin init phase
}

public void DeInitPlugin()
{
	ActGlobals.oFormActMain.UpdateCheckClicked -= oFormActMain_UpdateCheckClicked;
}

void oFormActMain_UpdateCheckClicked()
{
	int pluginId = 999;	   // This ID must be the same ID used on ACT's website.  
	try
	{
		DateTime localDate = ActGlobals.oFormActMain.PluginGetSelfDateUtc(this);
		DateTime remoteDate = ActGlobals.oFormActMain.PluginGetRemoteDateUtc(pluginId);
		if (localDate.AddHours(2) < remoteDate)
		{
			DialogResult result = MessageBox.Show("There is an updated version of the PLUGINNAME Plugin.  Update it now?\n\n(If there is an update to ACT, you should click No and update ACT first.)", "New Version", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
			if (result == DialogResult.Yes)
			{
				FileInfo updatedFile = ActGlobals.oFormActMain.PluginDownload(pluginId);
				ActPluginData pluginData = ActGlobals.oFormActMain.PluginGetSelfData(this);
				pluginData.pluginFile.Delete();
				updatedFile.MoveTo(pluginData.pluginFile.FullName);
				
				// You can choose to simply restart the plugin, if the plugin can properly clean-up in DeInit and has no external assemblies that update
				ThreadInvokes.CheckboxSetChecked(ActGlobals.oFormActMain, pluginData.cbEnabled, false);	// Deinit the old plugin
				Application.DoEvents();
				ThreadInvokes.CheckboxSetChecked(ActGlobals.oFormActMain, pluginData.cbEnabled, true);	// Init the new version
				
				// OR, you can request that ACT be restarted when the user accepts
				ActGlobals.oFormActMain.RestartACT(true, "The PLUGINNAME requires ACT to be restarted to work properly.");
			}
		}
	}
	catch (Exception ex)
	{
		ActGlobals.oFormActMain.WriteExceptionLog(ex, "Plugin Update Check");
	}
}