这段代码改成线程更新界面

Question

http://dotcpp.iteye.com/blog/1681444  参考，自己写写。

Answer 1

默认情况下.net是不允许跨线程访问控件的，如果要使用，可以通过Control.Invoke方法，参考1楼的例子。如果自己不愿意处理线程的，也可以用BackgroundWorker来实现，具体使用方法参考MSDN。

Answer 2

仅供参考！
BackgroundWorker bg = new BackgroundWorker();        public Form7()
        {
            InitializeComponent();
            bg.WorkerReportsProgress = true;
            bg.DoWork += new DoWorkEventHandler(bg_DoWork);
            bg.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bg_RunWorkerCompleted);
        }        private void bg_DoWork(object sender, DoWorkEventArgs e)
        {
            FindFile("d:\\", "*.exe");
        }        private void FindFile(string FoldPath, string filter)
        {
            try
            {
                DirectoryInfo thefolder = new DirectoryInfo(FoldPath);
                foreach (FileInfo nextfile in thefolder.GetFiles(filter))
                {
                    this.listBox1.Items.Add(nextfile.FullName);
                }
                foreach (DirectoryInfo nextfolder in thefolder.GetDirectories())
                {
                    FindFile(nextfolder.FullName, filter);
                }
            }
            catch
            {            }
        }        private void bg_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                MessageBox.Show(e.Error.ToString());
            }
            else
            {
                MessageBox.Show("Completed!");
            }
        }