C# WPF 使用委托修改UI控件

    近段時間在自學WPF，是一個完全不懂WPF的菜鳥，對於在線程中修改UI控件使用委托做一個記錄，給自已以后查詢也給需要的參考：

 

界面只放一個RichTextBox，在窗體啟動時開起兩個線程，調用兩個函數，每隔1秒寫一次當前時間

一 界面XAML如下：

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" WindowStartupLocation="CenterScreen" Loaded="Window_Loaded">
    <Grid>
        <ScrollViewer>
            <RichTextBox HorizontalAlignment="Stretch" Margin="12" Name="richTextBox1" VerticalAlignment="Stretch" />
        </ScrollViewer>
    </Grid>
</Window>

 

 

二 在界面啟動時開啟兩個線程：

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            //創建線程1
            Thread t1 = new Thread(new ThreadStart(T1));
            t1.Start();

            //創建線程2
            Thread t2 = new Thread(new ThreadStart(T2));
            t2.Start();
        }

 

三 線程調用函數：

        /// <summary>
        /// 線程1調用函數
        /// add by 
        /// </summary>
        private void T1()
        {
            while (true)
            {
                Thread.Sleep(TimeSpan.FromSeconds(1));
                ShowMsg(string.Format("T1 {0}", System.DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss:fff")));
            }
        }
        /// <summary>
        /// 線程2調用函數
        /// add by 
        /// </summary>
        private void T2()
        {
            while (true)
            {
                Thread.Sleep(TimeSpan.FromSeconds(1));
                ShowMsg(string.Format("T2 {0}", System.DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss:fff")));
            }
        }

 

三 寫前端函數：

        private void ShowMsg(string sMsg)
        {
            this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate() {
                richTextBox1.AppendText(string.Format("{0} \r\n",sMsg));
            });
        }