UWP app: FileOpenPicker PickSingleFileAsync() can't await

Question

I\'m trying to let the user browse for a file with the FileOpenPicker class, but when I use the PickSingleFileAsync function with await, I get following error:

Answer 1

do you have:

using System;

at the top of the class file? I just tried adding your sample to a project and duplicated your error when I removed this reference...