c#跨線程操作控件（有UI操作）|及多線程操作

僅記錄（好多大佬都會）：

跨線程操作UI控件

※在.NET2.0之后為了線程之間的安全，不允許跨線程操作控件，最簡單的解決辦法是禁止檢查,但一般不猜用此方法，會造成各線程之間的混亂，可用作臨時調試使用。

public Form1()
{
　　InitializeCompoent();
　　Control.CheckForIllegalCrossThreadCalls=false;
}

①跨線程操作UI控件

■測試實現的功能，單擊按鈕（button1），實現文本（label1）從0到100的自增

        private void button1_Click(object sender, EventArgs e)
        {
            Thread pThread = new Thread(new ThreadStart(this.ThreadProcSafe));
            pThread.Start();
        }
        public delegate void StringArgReturningVoidDelegate(string str);
        private void ThreadProcSafe()
        {
            for (int i = 0; i < 100; i++)
            {
                SetText(i.ToString());
                Thread.Sleep(100);
            }
        }
        private void SetText(string str)
        {
            if (this.label1.InvokeRequired)
            {
                StringArgReturningVoidDelegate d = new StringArgReturningVoidDelegate(SetText);
                this.Invoke(d, new object[] { str });
            }
            else
            {
                this.label1.Text = str;
            }
        }

②多線程，無UI操作

■使用backgroundWorker控件

        private void button1_Click(object sender, EventArgs e)
        {
            using (BackgroundWorker bw = new BackgroundWorker())
            {
                bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_complete);
                bw.DoWork += new DoWorkEventHandler(bw_DoWork);
                bw.RunWorkerAsync("SQYJ");
            }
        }
        public void bw_complete(object secder, RunWorkerCompletedEventArgs e)
        {
            MessageBox.Show("cs");
        }

        public void bw_DoWork(object sender, DoWorkEventArgs e)
        {
            Thread.Sleep(1000);
            e.Result = e.Argument;
        }