It seemed there is only me having this strange issue. Intellisense can work properly in XAML, C# (other .NET) but not C# for Android, I can not get code suggestion for .CS files in Droid Project.
I also removed and reinstalled VS 2017 but the problem is still there. Did I missed out anything? Any idea what could go wrong?
Thanks.
Have you tried to enable Intellisense for Android?