C# 子线程怎么操作主线程的组件？？

stm32w 2010-10-31 02:25:40

C# 子线程怎么操作主线程的组件？？

比如说主线程有个 textBox,

子线程要往textBox里面追加一个字符串，怎么实现？

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grzx2210 2010-11-01

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winform就需要一部调用代理。 Wpf 这有this.Dispatcher.Invoke

scholar_fly 2010-11-01

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使用委托。委托可以传递class的指针

我说我行就是行 2010-11-01

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归归，顶！

空间数据研究所 2010-11-01

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using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Threading;



namespace ThreadLableTest

{

    public class Form1 : Form

    {



        #region 界面元素

        private System.ComponentModel.IContainer components = null;

        protected override void Dispose(bool disposing)

        {

            if (disposing && (components != null))

            {

                components.Dispose();

            }

            base.Dispose(disposing);

        }

        private void InitializeComponent()

        {

            this.btnStart = new System.Windows.Forms.Button();

            this.label1 = new System.Windows.Forms.Label();

            this.btnStop = new System.Windows.Forms.Button();

            this.SuspendLayout();

            this.btnStart.Location = new System.Drawing.Point(176, 107);

            this.btnStart.Name = "btnStart";

            this.btnStart.Size = new System.Drawing.Size(75, 23);

            this.btnStart.TabIndex = 0;

            this.btnStart.Text = "开始移动";

            this.btnStart.UseVisualStyleBackColor = true;

            this.btnStart.Click += new System.EventHandler(this.btnStart_Click);

            this.label1.AutoSize = true;

            this.label1.Location = new System.Drawing.Point(12, 39);

            this.label1.Name = "label1";

            this.label1.Size = new System.Drawing.Size(59, 12);

            this.label1.TabIndex = 1;

            this.label1.Text = "移动Label";

            this.btnStop.Location = new System.Drawing.Point(257, 107);

            this.btnStop.Name = "btnStop";

            this.btnStop.Size = new System.Drawing.Size(75, 23);

            this.btnStop.TabIndex = 2;

            this.btnStop.Text = "停止移动";

            this.btnStop.UseVisualStyleBackColor = true;

            this.btnStop.Click += new System.EventHandler(this.btnStop_Click);

            // 

            // Form1

            // 

            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);

            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

            this.ClientSize = new System.Drawing.Size(345, 208);

            this.Controls.Add(this.btnStop);

            this.Controls.Add(this.label1);

            this.Controls.Add(this.btnStart);

            this.MaximizeBox = false;

            this.MinimizeBox = false;

            this.Name = "Form1";

            this.Text = "线程测试";

            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing);

            this.ResumeLayout(false);

            this.PerformLayout();



        }

        private System.Windows.Forms.Button btnStart;

        private System.Windows.Forms.Label label1;

        private System.Windows.Forms.Button btnStop;

        #endregion

        private volatile bool _shouldStop;

        public Form1()

        {

            InitializeComponent();

            _shouldStop = false;



        }

        private void btnStart_Click(object sender, EventArgs e)

        {

            _shouldStop = false;

            Thread move = new Thread(new ThreadStart(MoveLabel));

            move.Start();

        }

        private delegate void MoveHandler(Point point);

        private void DoMove(Point point)

        {

            this.label1.Location = point;

        }

        private void MoveLabel()

        {

            while (!_shouldStop)

            {

                Point nowPoint = this.label1.Location;

                Point newPoint = new Point(nowPoint.X + 1, nowPoint.Y);

                this.label1.Invoke(new MoveHandler(DoMove), new object[] { newPoint });

                Thread.Sleep(100);

            }

        }

        private void btnStop_Click(object sender, EventArgs e)

        {

            _shouldStop = true;

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)

        {

            _shouldStop = true;

            Environment.Exit(0);

        }

        [STAThread]

        static void Main()

        {

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);

            Application.Run(new Form1());

        }

    }

}

S_elva 2010-10-31

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5L 正解。

让爱延续 2010-10-31

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顶
Control.Invoke或Control.BeginInvoke方法

wuyq11 2010-10-31

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需要通过 Control.Invoke或Control.BeginInvoke方法来进行处理
Control.CheckForIllegalCrossThreadCalls=false;

delegate void AddDelegate();
event AddDelegate addEvent;

private void Form1_Load(object sender, EventArgs e)
{
addEvent+= new AddDelegate(TEST);
Thread myThread = new Thread(new ThreadStart(this.Add));
myThread.Start();
}
private void TEST()
{
listBox1.Items.Add("a");
}
private void Add()
{
if (this.InvokeRequired)
{
this.Invoke(addEvent);
}
else
{
listBox1.Items.Add("ip");
}
}

MOTA 2010-10-31

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委托.

nfdz2008 2010-10-31

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呵呵还是不懂

边城的刀声 2010-10-31

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public void StartWithArg()

        {

            structB stNum = new structB();

            stNum.structNum = new structA[100];

            Thread thread1 = new Thread(delegate() { Run(txtName); });

            thread1.Start();

        }



        public void Run(TextBox txt)

        {

            txt.Text += "run";

        }