事件与委托实例

目标：在UserContrl空间中有一个Button，点击该Button，忘Window1中的listbox中添加数据

 

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;

namespace WpfApplication2
{
    /// <summary>
    /// Monitor_Config.xaml 的交互逻辑
    /// </summary>
    public partial class Monitor_Config : UserControl
    {
        public delegate void ExecuteButtonHandler(Object Sender, ExecuteButtonEventArgs e);
        public event ExecuteButtonHandler ExecuteButton;
        private Monitor _monitor = new Monitor(100,"100号话务员");
        public Monitor_Config()
        {
            InitializeComponent();
        }
        
        private void btn_exc_Click(object sender, RoutedEventArgs e)
        {
            ExecuteButtonEventArgs ve = new ExecuteButtonEventArgs(_monitor);
            onExebtn(this, ve);
        }
        protected void onExebtn(Object sender, ExecuteButtonEventArgs e)
        {
            if (ExecuteButton != null)
            {
                ExecuteButton(sender, e);
            }
        }
    }
    public class ExecuteButtonEventArgs : EventArgs {
        public ExecuteButtonEventArgs(Monitor _monitor)
        {
            this.Monitor = _monitor;
        }
        public Monitor Monitor { get; set; }
    }
}

说明：定义委托、事件、及ExecuteButtonEventArgs，在btn_exc_Click中触发；

Window1.xaml:

 

<Window x:Class="WpfApplication2.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:conig="clr-namespace:WpfApplication2"
    Title="Window1" Height="500" Width="600">
    
        <Grid>
        <ListBox Margin="13,9,0,0" Name="listBox1" ItemsSource="{Binding}"  Height="100" VerticalAlignment="Top" HorizontalAlignment="Left" Width="120" >
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Path=Name}"></TextBlock>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
        <conig:Monitor_Config HorizontalAlignment="Right" Width="230" Height="250" VerticalAlignment="Top" x:Name="config_control"></conig:Monitor_Config>
        
    </Grid>
</Window>

Window.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.Collections.ObjectModel;
namespace WpfApplication2
{
    /// <summary>
    /// Window1.xaml 的交互逻辑
    /// </summary>
    public partial class Window1 : Window
    {
        private ObservableCollection<Monitor> _list = new ObservableCollection<Monitor>();
        private List<string> list_string = new List<string>();
        public Window1()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(Window1_Loaded);
            _list.Add(new Monitor(1, "1号"));
            _list.Add(new Monitor(2, "2号"));
            _list.Add(new Monitor(3, "3号"));
            _list.Add(new Monitor(4, "4号"));
            _list.Add(new Monitor(5, "5号"));

            listBox1.DataContext = _list;
            this.config_control.ExecuteButton += new Monitor_Config.ExecuteButtonHandler(config_control_ExecuteButton);
        }

        void config_control_ExecuteButton(object Sender, ExecuteButtonEventArgs e)
        {
            Monitor monitor = e.Monitor;
            _list.Add(monitor);
        }

        void Window1_Loaded(object sender, RoutedEventArgs e)
        {
            
        }
        public ObservableCollection<Monitor> List
        {
            get { return _list; }
            set { _list = value; }
        }
    }
    public class Monitor {
        public Monitor(int id ,string name) {
            this._id = id;
            this._name = name;
        }
        private int _id;
        public int ID {
            get { return _id; }
            set { _id = value; }
        }
        private string _name;
        public string Name {
            get { return _name; }
            set { _name = value; }
        }
    }
}

完成了