Here is the description - https://docs.microsoft.com/en-us/xamarin/ios/user-interface/controls/picker
and here is the sample - https://developer.xamarin.com/samples/monotouch/PickerControl/
The sample compiles successfully and runs, but doesn't show the correct selection inside the display label. It looks like it is displaying values that were previously selected.
Can someone download this sample and run it in their simulator to check whether it works?
If its broken, the XAMARIN folks need to fix it.