wpf数据绑定、变更通知

首先是一个支持数据变更通知的类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ComponentModel;

namespace EtoonProduct.exeWpf
{
    [Serializable]
    ///需要实现INotifyPropertyChanged接口
    public class DjStatisticHistory : INotifyPropertyChanged
    {
        int coID;
        public int CoID
        {
            get { return coID; }
            set
            {
                coID = value;

                //通知属性变更
                Notify("CoID");
            }
        }

        string url;
        public string URL
        {
            get { return url; }
            set
            {
                url = value;

                //通知属性变更
                Notify("URL");
            }
        }

        public DjStatisticHistory(int coID, string url)
        {
            this.coID = coID;
            this.url = url;
        }

        #region INotifyPropertyChanged 成员

        /// <summary>
        /// 属性变化通知委托
        /// </summary>
        public event PropertyChangedEventHandler PropertyChanged;

        /// <summary>
        /// 实现INotifyPropertyChanged接口方法。这个方法实现比较固定，直接使用就可以了
        /// </summary>
        /// <param name="propName"></param>
        protected void Notify(string propName)
        {
            if (this.PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
            }
        }

        #endregion
    }
}

Window1.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.Navigation;
using System.Windows.Shapes;

using System.ComponentModel;

namespace EtoonProduct.exeWpf
{
    /// <summary>
    /// Window1.xaml 的交互逻辑
    /// </summary>
    public partial class Window1 : Window
    {
        DjStatisticHistory sta = new DjStatisticHistory(201, "http://localhost/dj/web");

        public Window1()
        {
            InitializeComponent();

            dataBind();
        }

        private void dataBind()
        {
            txtURL.Text = sta.URL;
            txtCoID.Text = sta.CoID.ToString();

            ///订阅属性变更
            sta.PropertyChanged += new PropertyChangedEventHandler(sta_PropertyChanged);

            urlView();
        }

        /// <summary>
        /// 实现属性变更逻辑
        /// </summary>
        void sta_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            switch (e.PropertyName)
            { 
                case "CoID" :
                    txtCoID.Text = sta.CoID.ToString();
                    break;
                case "URL":
                    txtURL.Text = sta.URL;
                    break;
            }
            urlView();
        }

        private void urlView()
        {
            labPage.Content = sta.URL + "/PriceSystem/Statistic/Static_HitoryMake.aspx?CoID=" + sta.CoID;
        }

        private void txtURL_TextChanged(object sender, TextChangedEventArgs e)
        {
            sta.URL = txtURL.Text;
        }

        private void txtCoID_TextChanged(object sender, TextChangedEventArgs e)
        {
            sta.CoID = Convert.ToInt32(txtCoID.Text);
        }
    }    
}

 

 

window1.xaml

<Window x:Class="EtoonProduct.exeWpf.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="201" Width="566">
    <Grid>
        <Button Height="24" HorizontalAlignment="Left" Margin="76,83,0,0" Name="button1" VerticalAlignment="Top" Width="105">保存设置</Button>
        <TextBox Height="23" Margin="76,41,174,0" Name="txtCoID" VerticalAlignment="Top" TextChanged="txtCoID_TextChanged">201</TextBox>
        <Label Height="28" HorizontalAlignment="Left" Margin="10,10,0,0" Name="label1" VerticalAlignment="Top" Width="60">虚拟目录</Label>
        <Label Margin="12,127,12,0" Name="labPage" Height="28" VerticalAlignment="Top">Static_HitoryMake.aspx?CoID=</Label>
        <Label Height="28" HorizontalAlignment="Left" Margin="10,41,0,0" Name="label3" VerticalAlignment="Top" Width="64">公司ID</Label>
        <TextBox Height="23" Margin="76,12,174,0" Name="txtURL" VerticalAlignment="Top" TextChanged="txtURL_TextChanged">http://localhost/dj/web</TextBox>
    </Grid>
</Window>