tamarin | S3 log bucket parser app for Django

I'm trying to create a custom control that contains a Picker With Xamarin.Forms. the problem is when trying to bind the ItemSource property, it's never gets binded, and when I touch the custom control on the mobile it shows an empty dialog with no binded items.

Note: I tried almost every solution I found on "Stack OverFlow" or on "forums.xamarin", and none of them worked for me.

here's my code:

For the Custom Control XAML file - which's named with "HitPicker" - :

I am trying to implement something similar to the screenshot below (the first screenshot); i.e., items that wrap when they reach the maximum one column can fit. This example was taken from this project in GitHub (unfortunately, the project is too old that I was unable to run it and see the result).

Inspired by the aforementioned project, I tried the following inside a content page:

A standard way to create a picker with xaml is the following.

https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/picker/populating-itemssource

I'm experiencing a JavaScript error on a pen on codepen.io.

TypeError: window.CP is undefined

I tried to look it up and understood that it's connected to an infinite loop protection, but I can't find a way to solve the problem.

Here is the link to the pen on CodePen (where it doesn't work) and to a JSFiddle (where it works).

Here is the code on the snippet (where it also works).

(The green block is supposed to change color when you scroll)

I have extracted the first level of keys from multidimensional hash, which look like:

Below is the sample code already shared in Xamarin docs.

I am very new to xamarin. I was developing my First app in which, a. First page displays userName, password and Login Button b. Second page displays a drop down , so I used picker control. But the picker is not displaying on my app screen.(SecondPage)

App.cs

Ello all, I keep getting the following:

System.InvalidOperationException with "PushAsync is not supported globally on iOS, please use a NavigationPage."

Even though I am using a NavigationPage and am using it properly from what I can tell. My F# skills aren't amazing so I'm definitely thinking I'm doing something wrong here but, surprisingly finding examples of preforming a Navigation.PushAsync are hard to come by in F#. I did find this bit of code and have been looking to it for an example of what right looks like.

https://github.com/fsprojects/Tamarin/blob/master/samples/Todo/TodoListMvc.fs

In the example I see this code wrapped in an async{}