VB.NET works just fine, no? Granted it is 13-14 years since I last time touched VB.NET, but slapping together apps in visual studio was a breeze. If something serious hasn't happened since then, it should still be easy.
There are (at least) three ways to make a desktop application (Classic Windows Forms, XAML and other, more different XAML, for what used to be Metro/Windows Store apps). Not all functionality overlaps between them.
There are a plethora of (paid) custom controls which reimplement the wheel for all of those (because Microsoft didn't bundle in some elementary Windows controls)
That being said, I personally miss LightSwitch.