Xamarin C# AdMob null error

[MegaTechnoLtd]

I try to connect with AdMob (Google Play Services Ads) Banner using Xamarin C# code, When I load:

adView.loadAd(adRequest);

Xamarin Show Error message ( System.NullReferenceException )

Please check the photo:
https://i.stack.imgur.com/bipES.png

The code and method here in:
https://github.com/hussien89aa/XamarinAndroidTutorial/blob/master/Admob.txt

I try to use different version of Emulators, SDKs and Google play services Ads versions (27.0 till 42.1002 Nougat) but still not work and show same error

My SDK library contain Google play Services and I use Visual Studio 2017

[MMF]

I think you have to call SetContentView method at the beginning of OnCreate()

Ex:
SetContentView(Resource.Layout.Main);

I had the same issue and after adding this line it worked!

[MegaTechnoLtd]

Thank you
That's right I solved the problem

[MegaTechnoLtd]

Thank you
That's right I solved the problem