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我正在尝试将 WebBrowser 添加到应用程序以显示网页，但线程类型一直存在问题。

目前我得到：

无法实例化 ActiveX 控件“8856f961-340a-11d0-a96b-00c04fd705a2”，因为当前线程不在单线程单元中。

我发现这个问题与这个问题有关：单线程公寓 - 无法实例化 ActiveX 控件

但是，我的代码中没有 Main() 方法，当我尝试解决该问题时，在将 WebBrowser 添加到表单控件时遇到错误。

我正在使用此处找到的代码：

http://www.apress.com/9781430228530

直接下载： http: //www.apress.com/downloadable/download/sample/sample_id/1173/

我在第 14 章的 Horizo​​ntalExplorerBar 文件夹中。

这是我用作参考的代码：

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using ProIeDev.BandObjectDemo.BandObject;
using System.Threading;
using System.Windows.Forms;

namespace ProIeDev.BandObjectDemo.HorizontalExplorerBar
{
    [ComVisible(true)]
    public class HorizontalExplorerBar : BandObject.BandObject
    {
        private WebBrowser webBrowser1;
        private System.Windows.Forms.RadioButton radioButton1;

        public HorizontalExplorerBar()
        {
           // var t = new Thread(InitializeComponent);
           // t.SetApartmentState(ApartmentState.STA);
          //  t.Start();
            InitializeComponent();
        }

        public override void DefineMetadata() 
        {

            ClassId = "{B028EA5C-B226-4E4B-88C6-8842A152BC5B}";
            ProgId = "ProIeDev.BandObjectDemo.HorizontalExplorerBar";
            ObjectName = "TodoBar Horizontal";
            ObjectTitle = "TodoBar Horizontal";
            HelpText = "TodoBar Horizontal";
            Style = BandObjectTypes.HorizontalExplorerBar;

        }

        #region Form Designer

        private void InitializeComponent()
        {
            this.radioButton1 = new System.Windows.Forms.RadioButton();
            this.webBrowser1 = new System.Windows.Forms.WebBrowser();
            this.SuspendLayout();
            // 
            // radioButton1
            // 
            this.radioButton1.AutoSize = true;
            this.radioButton1.Location = new System.Drawing.Point(323, 34);
            this.radioButton1.Name = "radioButton1";
            this.radioButton1.Size = new System.Drawing.Size(85, 17);
            this.radioButton1.TabIndex = 0;
            this.radioButton1.TabStop = true;
            this.radioButton1.Text = "radioButton1";
            this.radioButton1.UseVisualStyleBackColor = true;
            // 
            // webBrowser1
            // 
            this.webBrowser1.Location = new System.Drawing.Point(44, 19);
            this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20);
            this.webBrowser1.Name = "webBrowser1";
            this.webBrowser1.Size = new System.Drawing.Size(250, 250);
            this.webBrowser1.TabIndex = 1;
            // 
            // HorizontalExplorerBar
            // 
            this.BackColor = System.Drawing.Color.DarkBlue;
            this.Controls.Add(this.webBrowser1);
            this.Controls.Add(this.radioButton1);
            this.Name = "HorizontalExplorerBar";
            this.Size = new System.Drawing.Size(456, 177);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion Form Designer

    }
}
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