winform中更新UI控件的方案介绍

using System.ComponentModel;
using System.Diagnostics;
using System.Timers;
using Tccc.DesktopApp.WinForms1.BLL;

namespace Tccc.DesktopApp.WinForms1
{
    public partial class UIUpdateDemoForm : Form
    {
        /// <summary>
        /// 
        /// </summary>
        public UIUpdateDemoForm()
        {
            InitializeComponent();
            backgroundWorker1.WorkerReportsProgress = true;
            backgroundWorker1.WorkerSupportsCancellation = true;
        }
        #region 演示InvokeRequired
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void invokeRequiredBtn_Click(object sender, EventArgs e)
        {
            Debug.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff") + "invokeRequiredBtn_Click 线程ID=" + Thread.CurrentThread.ManagedThreadId);

            new Thread(() =>
            {
                Debug.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff") + "BeginWorking_Invoke 线程ID=" + Thread.CurrentThread.ManagedThreadId);
                BLLWorker.BeginWorking_Invoke(this, "some input param");
            }).Start();
             
        }

        /// <summary>
        /// 
        /// </summary>
        public void UpdatingProgress(int progress)
        {
            if (this.InvokeRequired)
            {
                Debug.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff") + "InvokeRequired=true 线程ID=" + Thread.CurrentThread.ManagedThreadId);
                this.Invoke(new Action(() =>
                {
                    Debug.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff") + "Sleep2秒 线程ID=" + Thread.CurrentThread.ManagedThreadId);
                    Thread.Sleep(2000);//模拟UI操作慢
                    UpdatingProgress(progress);
                }));
                Debug.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff") + "after Invoke 线程ID=" + Thread.CurrentThread.ManagedThreadId);
            }
            else
            {
                Debug.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff") + "InvokeRequired=false 线程ID=" + Thread.CurrentThread.ManagedThreadId);
                richTextBox1.Text += DateTime.Now.ToString("HH:mm:ss") + "：执行进度" + progress + "%" + Environment.NewLine;
            }
        }
        #endregion

        #region 演示BackgroundWorker

        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void bgWorkerBtn_Click(object sender, EventArgs e)
        {
            new Thread(() =>
            {
                //Control.CheckForIllegalCrossThreadCalls = true;
                //richTextBox1.Text = "可以了？";
            }).Start();

            Debug.WriteLine("bgWorkerBtn_Click 线程ID=" + Thread.CurrentThread.ManagedThreadId);
            if (!backgroundWorker1.IsBusy)
            {
                richTextBox1.Text = String.Empty;
                backgroundWorker1.RunWorkerAsync("hello world");//
            }
        }
        private void bgWorkerCancelBtn_Click(object sender, EventArgs e)
        {
            Debug.WriteLine("bgWorkerCancelBtn_Click 线程ID=" + Thread.CurrentThread.ManagedThreadId);
            if (backgroundWorker1.IsBusy)
            {
                backgroundWorker1.CancelAsync();//
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            Debug.WriteLine("backgroundWorker1_DoWork 线程ID=" + Thread.CurrentThread.ManagedThreadId);

            BLLWorker.BeginWorking(sender, e);//控件遍历传递到业务处理程序中

        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            Debug.WriteLine("backgroundWorker1_ProgressChanged 线程ID=" + Thread.CurrentThread.ManagedThreadId);
            richTextBox1.Text += Environment.NewLine + DateTime.Now.ToString("HH:mm:ss.fff") + "：执行进度" + e.ProgressPercentage + "%";
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            Debug.WriteLine("backgroundWorker1_RunWorkerCompleted 线程ID=" + Thread.CurrentThread.ManagedThreadId);
            if (e.Cancelled)
            {
                richTextBox1.Text += Environment.NewLine + DateTime.Now.ToString("HH:mm:ss.fff") + "：已取消";
            }
            else if (e.Error != null)
            {
                richTextBox1.Text += Environment.NewLine + DateTime.Now.ToString("HH:mm:ss.fff") + "：发生错误:" + e.Error.Message;
            }
            else
            {
                richTextBox1.Text += Environment.NewLine + DateTime.Now.ToString("HH:mm:ss.fff") + "：执行完成";
                richTextBox1.Text += Environment.NewLine + DateTime.Now.ToString("HH:mm:ss.fff") + "：执行结果=" + e.Result;
            }
        }
        #endregion

    }
        public class BLLWorker
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static void BeginWorking_Invoke(UIUpdateDemoForm form, string inputData)
        {
            int counter = 0;
            int max = 5;
            while (counter < max)
            {
                System.Threading.Thread.Sleep(200);
                counter++;
                form.UpdatingProgress(counter * 20);
            }
        }
        /// <summary>
        /// 模拟耗时操作（下载、批量操作等）
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static void BeginWorking(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            Debug.WriteLine("inputArgument=" + e.Argument as string);

            for (int i = 1; i <= 10; i++)
            {
                if (worker.CancellationPending == true)//检测是否被取消
                {
                    e.Cancel = true;
                    break;
                }
                else
                {
                    // Perform a time consuming operation and report progress.
                    System.Threading.Thread.Sleep(200);
                    worker.ReportProgress(i * 10);
                }
            }
            e.Result = "result xxxx";

        }
    }
}