[转]C#通过委托更新UI(异步加载）

usingSystem.Windows.Forms;
usingSystem.Threading;
usingSystem;
namespaceThreaddemo1
{
    public partial classForm1 : Form
    {
        publicForm1()
        {
            InitializeComponent();
        }
        delegate void aa(string s);//创建一个代理
        private void Form1_Load(objectsender, EventArgs e)
        {
            Thread newthread = new Thread(newThreadStart(ttread));
            newthread.Start();
        }
        voidttread()
        {
            pri("77");
        }
        private delegate void ProgressBarShow(inti);
        private void pri(stringp)
        {
            bool name =richTextBox1.InvokeRequired;
            //MessageBox.Show(name.ToString());
            if (!richTextBox1.InvokeRequired)//判断是否需要进行唤醒的请求，如果控件与主线程在一个线程内，可以写成if(!InvokeRequired)
{
                Loadthread();
            }
            else
            {
             //MessageBox.Show("不是同一个线程");
                aa a1 = newaa(pri);
                Invoke(a1, new object[] { p });//执行唤醒操作
}
        }
        private voidLoadthread()
        {
            string s = string.Empty;
            for (int b = 0; b < 10000; b++)
            {
                this.ShowPro(b);
                s +=b.ToString();
            }
            //MessageBox.Show("同一线程内");
LoadRichebox(s);
        }
        voidsend() {
            Thread.CurrentThread.Abort();
        }
        private void LoadRichebox(strings)
        {
            richTextBox1.Text =s;
        }
        private void ShowPro(intvalue)
        {
            if (this.InvokeRequired)
            {
                this.Invoke(newProgressBarShow(ShowPro), value);
            }
            else
            {
                this.progressBar1.Value =value;
                this.label1.Text = value + "% Processing...";
            }
        }
    }
}