WPF initialized event in The reason why binding is not triggered in CS

The reason a ： Binding order problem , If you want to execute this event , Need to bind in InitializeComponent() Before

 public ucDoctSchema()
        {
    
            this.Initialized += new EventHandler(frmDoctShemaTemplet_Initialized);
            InitializeComponent();
            }
             private void frmDoctShemaTemplet_Initialized(object sender, EventArgs e){
    }
             }