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  • wpf数据绑定、变更通知

    首先是一个支持数据变更通知的类
    代码
    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(
    thisnew PropertyChangedEventArgs(propName));
                }
            }

            
    #endregion
        }
    }


    Window1.xaml.cs

    代码
    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

    代码
    <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>
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  • 原文地址:https://www.cnblogs.com/timy/p/1635069.html
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