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刚才看到有人问为了winfrom中，在大数据绑定的时候出现画面假死的状态，为了解决这个问题希望通过再开一个线程来给控件绑定数据，可是画面还是会假死。1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | using?System;using?System.Threading;using?System.Windows.Forms;? namespace?ThreadTest{????public?partial?class?Form1?:?Form????{????????? ????????public?Form1()????????{????????????InitializeComponent();????????????Control.CheckForIllegalCrossThreadCalls?=?false;//这一行是关键??????????????}????????? ????????private?void?btnSet_Click(object?sender,?EventArgs?e)????????{???????????????????????Thread?t?=?new?Thread(new?ParameterizedThreadStart(SetTextBoxValue));????????????t.Start("Hello?World");????????}? ? ????????void?SetTextBoxValue(object?obj)?????????{????????????this.textBox1.Text?=?obj.ToString();????????}????????????}} |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | using?System;using?System.ComponentModel;using?System.Windows.Forms;? namespace?ThreadTest{????public?partial?class?Form1?:?Form????{????????public?Form1()????????{????????????InitializeComponent();????????????????????}???????? ????????private?void?btnSet_Click(object?sender,?EventArgs?e)????????{????????????//MessageBox.Show(Thread.CurrentThread.ManagedThreadId.ToString());????????????using?(BackgroundWorker?bw?=?new?BackgroundWorker())????????????{????????????????bw.RunWorkerCompleted?+=?new?RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);????????????????bw.DoWork?+=?new?DoWorkEventHandler(bw_DoWork);????????????????bw.RunWorkerAsync("Hello?World");????????????}????????}? ????????void?bw_DoWork(object?sender,?DoWorkEventArgs?e)????????{????????????//MessageBox.Show(Thread.CurrentThread.ManagedThreadId.ToString());????????????e.Result?=?e.Argument;//这里只是简单的把参数当做结果返回，当然您也可以在这里做复杂的处理后，再返回自己想要的结果(这里的操作是在另一个线程上完成的)????????}? ????????void?bw_RunWorkerCompleted(object?sender,?RunWorkerCompletedEventArgs?e)????????{????????????//这时后台线程已经完成，并返回了主线程，所以可以直接使用UI控件了????????????this.textBox1.Text?=?e.Result.ToString();????????????//MessageBox.Show(Thread.CurrentThread.ManagedThreadId.ToString());????????}???????????}????} |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | ????????//?代码中自己定义的按钮（非显示按钮）????????private?Button?testBtn?=?new?Button();? ????????private?void?button1_Click(object?sender,?EventArgs?e)????????{????????????Thread?thr?=?new?Thread(ControlParent);????????????thr.Start();????????}? ????????private?void?ControlParent()????????{????????????Thread.Sleep(3000);????????????//?给自己定义的按钮赋值没有问题????????????testBtn.Text?=?"eeee";????????????//?给画面上显示的按钮赋值，InvalidOperationException错误（这里迷糊了，子线程不能直接给主线程赋值，那么主线程是什么？）????????????this.button1.Text?=?"asda";//?InvalidOperationException！！！！！！！！！！！????????} |
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原文地址：http://www.cnblogs.com/hijushen/p/4239917.html
