在你的工程中的扩展方法类中写下一个SafeCall方法：using System;using System.Windows.Forms; namespace WindowsFormsApplication1{    public static class Extensions    {        public static void SafeCall(this Control ctrl, Action callback)        {            if (ctrl.InvokeRequired)                ctrl.Invoke(callback);            else                callback();        }    }}它只是把你要保护起来的代码作为一个回调而已。然后任何需要保护一些代码的地方都可以这样调用：using System;using System.Threading;using System.Windows.Forms; namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }         private void Form1_Load(object sender, EventArgs e)        {            ThreadPool.QueueUserWorkItem(h =>            {                for (var i = 0; i < 10000000; i++)                {                    label1.SafeCall(() =>                    {                        label1.Text = i.ToString();                    });                    Thread.Sleep(100);                }            });        }     }}

当然，使用lamda是我的一个“坏毛病”。其实这里完全可以使用传统的匿名委托写法：using System;using System.Threading;using System.Windows.Forms; namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }         private void Form1_Load(object sender, EventArgs e)        {            ThreadPool.QueueUserWorkItem(h =>            {                for (var i = 0; i < 10000000; i++)                {                    label1.SafeCall(delegate()                    {                        label1.Text = i.ToString();                    });                    Thread.Sleep(100);                }            });        }     }}