How to do binding based on a condition in .net maui? - mvvm

Question

I'd like to ask how to do the conditional binding in a .net Maui app. for example
if I have a class
public class ClassA
{
public string Property1{get;set;}
public string Property2{get;set;}
}
and I don't have access to the class implementation so I cannot add methods
and in my view, I want to bind to Property1 if some condition is true and bind to Property2 if that condition was false.
Is there a way to do conditional binding from the view itself without changing ClassA implementation?

Answer 1

I think you could achieve this goal by setting binding property in code-behind (xaml.cs file) instead of .xaml file.
For example:
In MainPage.xaml, you have a label with name labelA:
<Label x:Name="labelA" />
In MainPage.xaml.cs constructor, you could bind Text property of labelA to one of viewModel properties based on a condition.
public MainPage(ClassA viewModel)
{
InitializeComponent();
BindingContext = viewModel;
if (true condition)
{
labelA.SetBinding(Label.TextProperty, nameof(viewModel.Property1));
}
else
{
labelA.SetBinding(Label.TextProperty, nameof(viewModel.Property2));
}
}