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  • WCF中使用控件的委托,线程中的UI委托

    UI界面:

    <Window x:Class="InheritDemo.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window1" Height="300" Width="300">
        <Grid>
            <StackPanel>
                <Label MouseEnter="Label_MouseEnter" MouseLeave="Label_MouseLeave">test1</Label>
            </StackPanel>
        </Grid>
    </Window>

    后端代码:

    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.Threading;
    
    namespace InheritDemo
    {
        /// <summary>
        /// Window1.xaml 的交互逻辑
        /// </summary>
        public partial class Window1 : Window
        {
            private Thread myThread = null;//定义线程
            private delegate void MyDelegate(Object para);//定义委托
            public Window1()
            {
                InitializeComponent();
            }
            /// <summary>
            /// 鼠标移入启动线程(继续挂起线程)
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void Label_MouseEnter(object sender, MouseEventArgs e)
            {
                if (myThread == null)//启动线程
                {
                    myThread = new Thread(ThreadMethod);
                    myThread.IsBackground = true;//后台线程
                    myThread.Start(sender);
                }
                else { myThread.Resume(); }//继续挂起线程
            }
            /// <summary>
            /// 鼠标移出挂起线程
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private void Label_MouseLeave(object sender, MouseEventArgs e)
            {
                if (myThread != null) { myThread.Suspend(); }//挂起线程
            }
            /// <summary>
            /// 线程事件调用委托
            /// </summary>
            /// <param name="para"></param>
            private void ThreadMethod(object para)
            {
                MyDelegate myDelegate = new MyDelegate(DelegateMethod);
                while (true)
                {
                    this.Dispatcher.BeginInvoke(myDelegate, para);//调用委托
                    Thread.Sleep(1000);//休眠1s
                }
            }
            /// <summary>
            /// 委托事件获取当前时间
            /// </summary>
            /// <param name="para"></param>
            private void DelegateMethod(object para)
            {
                Label lbl = (Label)para;
                lbl.Content = DateTime.Now.ToString();
            }
            
        }
    }
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  • 原文地址:https://www.cnblogs.com/qq458978/p/4519449.html
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