how to pass multiple labels through ContentPage - xamarin.forms

Question

I am looking for help setting the code behind to pass multiple Labels using the next button. Basically I want to have a label set when the page is opened, press the next button and have a new label replace the current one (without setting new content pages). I a beginner working in Xamarin.Forms and I am not really understanding the data binding process... If anyone has a good reference (other than the Microsoft Website) that would help as well. Pretty sure the code below will not do anything yet... Thanks in advance :)
this is the ContentPage:
<ContentPage.Content>
<StackLayout>
<Label Text="{Binding TitleText}" />
<ScrollView VerticalOptions="FillAndExpand">
<StackLayout>
<Label Text="{Binding EngText}" />
<Label Text="{Binding ItText}" />
</StackLayout>
</ScrollView>
This is what I started for the code behind:
''''''
namespace MVVM2
{
public partial class MainPage : ContentPage
{
List<MainPage> Contacts { get; set; }
int ndx = 0;
public string TitleText { get; set; }
public string EngText { get; set; }
public string ItText { get; set; }
public MainPage()
{
InitializeComponent();
Contacts = new List<MainPage>();
// repeat this for as many contacts as you need
Contacts.Add(new MainPage
{
TitleText = "Title1",
EngText = "EngText1",
ItText = "ItText1"
});
Contacts.Add(new MainPage
{
TitleText = "Title2",
EngText = "EngText2",
ItText = "ItText2"
});
Contacts.Add(new MainPage
{
TitleText = "Title3",
EngText = "EngText3",
ItText = "ItText3"
});
// display the first contact
BindingContext = Contacts[ndx];
}
private void OnNavigateButtonClicked(object sender, EventArgs e)
{
// increment your index
ndx++;
// check that we haven't gone too far
if (ndx < Contacts.Count)
{
BindingContext = Contacts[ndx];
}
}
}
}

Answer 1

if you just want to display different text when the button is clicked, you don't need to navigate to a new page
first, create a List to hold your buttons and a variable to keep track of which one is displayed. These two lines should be in the body of your class but NOT inside any specific method
List<Contact> contacts { get; set; }
int ndx = 0;
then in your constructor setup your data
public MainPage()
{
InitializeComponent();
contacts = new List<Contact>();
// repeat this for as many contacts as you need
contacts.Add(new Contact {
TitleText = "Title1",
EngText = "EngText1",
ItText = "ItText1"});
// display the first contact
BindingContext = contacts[ndx];
}
finally, handle the button click
async void OnNavigateButtonClicked(object sender, EventArgs e)
{
// increment your index
ndx++;
// check that we haven't gone too far
if (ndx < contacts.Count) {
BindingContext = contacts[ndx];
}
}