public ListEmpleadoHuella()
        {
            InitializeComponent();

            ReadBC obj = new ReadBC();
            EmpleadoHuellas = obj.ReadEmpleadoHuella();

            this.DataContext = EmpleadoHuellas;

        }
 public void Update() 
 {
     ReadBC obj = new ReadBC();
     this.DataContext = obj.ReadEmpleadoHuella();
 }