怎样在一个form窗体里开两个UI线程
我现在有个form有两个控件，一个是WebBrowser控件，一个是普通按钮控件A。我现在要做个调试网页功能，通过网页里window.external.Wait方法调用本地方法Wait，然后挂起网页，比如当网页运行到window.external.Wait方法时就把网页挂起来不让它继续执行。同时form里的普通按钮控件A可以操作恢复和挂起网页。 现在的问题是当我挂起网页时整个form窗体就处于假死状态。我想到的办法是开两个UI线程，一个UI线程A处理WebBrowser，另一个UI线程B处理form，当UI线程A挂起时，UI线程B可继续运行，并可挂起和恢复UI线程A。 但是现在Winform的机制好像是一个应用程序只能有一个UI线程，有没有其他办法解决这个问题，这问题困扰我好几天了，所有求助csdn各位牛人帮忙想想办法。
- C# code
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication8{ [System.Runtime.InteropServices.ComVisibleAttribute(true)] public class Form1 : Form { private System.Windows.Forms.WebBrowser webBrowser1; private System.Windows.Forms.Button button1; /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; public Form1() { InitializeComponent(); webBrowser1.ObjectForScripting = this; webBrowser1.DocumentText = "<html><head><title></title> " + "<script type=\"text/javascript\"> window.external.Wait();" + " alert('test！'); </script> </head> <body> </body></html>"; } protected override void OnLoad(EventArgs e) { } private void button1_Click(object sender, EventArgs e) { } public void Wait() {//挂起后怎么才能让窗体不处于假死状态 System.Threading.Thread.CurrentThread.Suspend(); } /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要 /// 使用代码编辑器修改此方法的内容。 /// </summary> private void InitializeComponent() { this.webBrowser1 = new System.Windows.Forms.WebBrowser(); this.button1 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // webBrowser1 // this.webBrowser1.Dock = System.Windows.Forms.DockStyle.Top; this.webBrowser1.Location = new System.Drawing.Point(0, 0); this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20); this.webBrowser1.Name = "webBrowser1"; this.webBrowser1.Size = new System.Drawing.Size(718, 204); this.webBrowser1.TabIndex = 0; // // button1 // this.button1.Location = new System.Drawing.Point(158, 224); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(75, 23); this.button1.TabIndex = 1; this.button1.Text = "挂起恢复"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(718, 283); this.Controls.Add(this.button1); this.Controls.Add(this.webBrowser1); this.Name = "Form1"; this.Text = "Form1"; this.ResumeLayout(false); } #endregion } static class Program { /// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } }}
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UI线程，也就是主线程只有一个吧
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- C# code
private void button1_Click(object sender, EventArgs e) { Thread t = new Thread(Test); t.Start(); } private void button2_Click(object sender, EventArgs e) { Thread t = new Thread(Test); t.Start(); } private void Test() { Thread.Sleep(3000); }
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你这样写直接把主线程挂起了，估计无解。
是不是可以换种思路呢？
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- C# code
private void DoWait() { Thread t = new Thread(Wait); t.Start(); } public void Wait() { //挂起后怎么才能让窗体不处于假死状态 System.Threading.Thread.CurrentThread.Suspend(); } //window.external.DoWait();
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用异步线程，然后使用委托，跨线程操作就可以了。
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能否换个思路?把web控件放到另一个窗体上,然后用另一个线程启动这个窗体,来控制?
- C# code
namespace WindowsFormsApplication1{ partial class Form1 { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要 /// 使用代码编辑器修改此方法的内容。 /// </summary> private void InitializeComponent() { this.button1 = new System.Windows.Forms.Button(); this.webBrowser1 = new System.Windows.Forms.WebBrowser(); this.SuspendLayout(); // // button1 // this.button1.Location = new System.Drawing.Point(12, 12); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(75, 23); this.button1.TabIndex = 0; this.button1.Text = "假死"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // webBrowser1 // this.webBrowser1.Location = new System.Drawing.Point(93, 12); this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20); this.webBrowser1.Name = "webBrowser1"; this.webBrowser1.Size = new System.Drawing.Size(234, 306); this.webBrowser1.TabIndex = 1; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(494, 330); this.Controls.Add(this.webBrowser1); this.Controls.Add(this.button1); this.Name = "Form1"; this.Text = "Form1"; this.ResumeLayout(false); } #endregion private System.Windows.Forms.Button button1; private System.Windows.Forms.WebBrowser webBrowser1; }}
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