How to bind and refresh static property?

See more:

C#

WPF

MVVM

i have view ,view model and objectclass

public class TestObject
   {

       private static string _sTitle;

       public static string Title
       {
           get; set;
       }
   }

public class TestViewModel : INotifyPropertyChanged
   {

     public TestViewModel()
     {

     }

       public event PropertyChangedEventHandler PropertyChanged;

       protected virtual void OnPropertyChanged ( string sProperty )
       {
           if ( PropertyChanged != null ) { PropertyChanged ( this , new PropertyChangedEventArgs ( sProperty ) ); }
       }
   }

<Window x:Class="Test.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local ="clr-namespace:Test"
        Height="350" Width="525"
      Title="{Binding ???}" >
    <Grid>
       
    </Grid>
</Window>

how to bind and refresh according with TestObject.Tiltle? please help me

What I have tried:

i done every thing.i didnt get any solution