Window5.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.ComponentModel;

namespace WpfApplication1
{
    /// <summary>
    /// Window5.xaml 的交互逻辑
    /// </summary>
    public partial class Window5 : Window, INotifyPropertyChanged
    {
        private double percent=1;
        public double Percent 
        {
            get {
                return percent;
            }
            set {
                if (percent != value)
                {
                    percent = value;
                    NotifyPropertyChanged("Percent");
                }
            }
        }
        public Window5()
        {
            InitializeComponent();
            this.DataContext = this;
        }


        protected void NotifyPropertyChanged(string propertyname) 
        {
            if (PropertyChanged != null) 
            {
                PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyname));
            }
        }
        public event PropertyChangedEventHandler PropertyChanged;
    }
}