Automatic Updater Running at Startup

I'm trying out the demo version and am using the AutomaticUpdater in a .net winforms app. I can get the updates when I click on the menu item linked to it but how do I make it automatically check?

The AutomaticUpdater automatically checks. It does not check on every startup, though, which is probably what you were expecting. If you want that then set the "DaysBetweenChecks" property to 0.