使用 RealObject 在 Xamarin.Forms 中进行数据绑定

Question

Apps running very smoothly but I have decided to add to it. I currently have an APR Calculator but I want users to be able to save APRs. so I currently had my app all in the one class as it was pretty small. The way it was set out was using MVVM. Like I said I now want users to be able to save APRs so I installed RealmDB, I've created a class "APR" and pasted my whole MainWindowViewModel code in to that class I've created. APR class inherits Realm Object I have created an instance of the APR class in MainWindowViewModel but the current bindings in my XAML cannot find my properties... Below is the code for my MainWindowViewModel.

namespace APRooved.ViewModels {

public class MainWindowViewModel : ViewModelBase
{

    APR InstanceOne = new APR();

}

}

I'm sure this is just something silly I'm missing, If someone can point me in the right direction It would be much appreciated.

Answer 1

you can only bind to public properties. InstanceOne is a field, not a property, and not public

public class MainWindowViewModel : ViewModelBase
{
    public APR InstanceOne { get; set; } = new APR();
}

Answer 2

Another way to do this would be initialise your APR class in the constructor

public class MainWindowViewModel : ViewModelBase
{
    public APR InstanceOne { get; set; }

    public MainWindowViewModel(){
        InstanceOne = new APR();
    }
}