This is not a Xamarin eco-system question. Its a "teach me C-Sharp" question. There are countless sites that handle general C# questions.
We can't teach you C# from scratch in a thread. You're going to have to learn C# through a proper guided course, either at a local community college, university, MS Learn, Lynda or the numerous books available.
Answers
That looks pretty easy, what have you tried so far?
Getting started in Xamarin
https://docs.microsoft.com/en-us/xamarin/cross-platform/get-started/
XAML Basics
https://docs.microsoft.com/en-us/xamarin/xamarin-forms/xaml/xaml-basics/
Data binding basics
https://docs.microsoft.com/en-us/xamarin/xamarin-forms/xaml/xaml-basics/data-binding-basics
Tutorial site
http://redpillxamarin.com/2018/03/12/2018-101-vs2017-new-solution/
Sorry, I'm learning to speak English ... lol
My question and the logical process of comparing passwords, buttons
This is not a Xamarin eco-system question. Its a "teach me C-Sharp" question. There are countless sites that handle general C# questions.
We can't teach you C# from scratch in a thread. You're going to have to learn C# through a proper guided course, either at a local community college, university, MS Learn, Lynda or the numerous books available.
C# Introduction tutorials.
https://www.dreamincode.net/forums/topic/218000-learning-c#-series-new-to-c#-start-here/
C# books on Amazon
https://www.amazon.com/s?k=Learn+C#&ref=nb_sb_noss
C# for beginners at Microsoft Virtual Academy
https://mva.microsoft.com/en-us/training-courses/c-fundamentals-for-absolute-beginners-16169?l=Lvld4EQIC_2706218949
@AndreGraciano.2753
I have created a simple demo, the main code is as follows:
MainPage.xaml
MainPage.xaml.cs
The effect is
