Syntax for accessing Variables in public Settings Class

I found following thread:

> After a lot of struggling to find the right answer, I was able to use
> [Preferences][1] to really easily get/set user settings without having
> to worry about saving and loading myself.
>
> // getter
> var value = Preferences.Get("nameOfSetting", "defaultValueForSetting");
>
> // setter
> Preferences.Set("nameOfSetting", value);
>
>
> I wrapped mine in a property so it's easier to use:
>
> public string FilePath
> {
> get { return Preferences.Get(nameof(FilePath), ""); }
> set { Preferences.Set(nameof(FilePath), value); }
> }

I tried a lot but cant manage to use the variables when wrapped in a property.

e.g. if I want to set the Labeltext to the Filepath setting from thread above:

Text = StandardSettings.get(Filepath);

or

Text = StandardSettings.Filepath{get};

The class StandardSettings is public and connected by "using" in my xaml.
What would be the syntax for getting/setting the Filepath?
Would be great to get the syntax for both xaml and c#.

I created a new project and everything worked correctly. Here is my code:

public partial class NewPage1 : ContentPage
{
      public string FileName
      {
            get { return Preferences.Default.Get(nameof(FileName),"NoName"); }
            set { Preferences.Default.Set(nameof(FileName), value); }
      }

      public NewPage1()
      {
            InitializeComponent();
    }

    private void Button_Clicked(object sender, EventArgs e)
    {
            this.FileName = "Hahaha";
            (sender as Button).Text = this.FileName;
    }
}

When I clicked the button, the button's text will change as Hahaha. And if I remove the this.FileName = "Hahaha";, it will be the default value NoName.

Note: this.FileName = "Hahaha"; will call the FileName's set method. And (sender as Button).Text = this.FileName; will call its get method.