How to make a multi-steps registration page with multi ContentView? - mvvm

Question

In the app I'm working on, there's a multi-steps registration, 4 steps:
to accomplish it, I'm thinking to have a single page to host a content view of the registration step, when it passes the validation requirements I remove it and inject the next content view.
This is an example to simplify my need:
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:XamApp"
x:Class="XamApp.MainPage">
<local:Register1/>
</ContentPage>
and the Register1 looks like this:
<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:XamApp"
x:Class="XamApp.Register1">
<ContentView.Resources>
<ResourceDictionary>
<local:IntToBoolConverter x:Key="intToBool"/>
</ResourceDictionary>
</ContentView.Resources>
<ContentView.Content>
<StackLayout>
<Label Text="Page 1" FontSize="Large"/>
<Entry x:Name="txtName" Placeholder="Name"/>
<Button Text="Next" IsEnabled="{Binding Source={x:Reference txtName},
Path=Text.Length,
Converter={StaticResource intToBool}}"
Clicked="Button_Clicked"/>
</StackLayout>
</ContentView.Content>
</ContentView>
There are two problems:
1- I don't know how to handle the data (view model) between steps, to have only one object through all steps (Shall I use DI? if yes , then how in MVVMLight?)
2- How to to inject the content view into the main registration page dynamically in an MVVM fashion?

Answer 1

The solution I came up with, is creating an interface:
public interface INavigate
{
INavigate Next();
INavigate Previous();
}
all the ContentViews inherit from, for example the second ContentView implementation:
public INavigate Next()
=> new View3();
public INavigate Previous()
=> new View1();
the container page's Content property is bound to the view model's property CurrentView of type INavigate,
the command of the next button execute this:
CurrentView = CurrentView.Next();
and this is for the previous button:
CurrentView = CurrentView.Previous();