菜鸟求助，组件的问题

Question

我写了一个组件，用下面语句描述，在工具箱里面能够看见我的组件，可是拖出来，它老是跑到设计面板下面去了（比如窗体），
我希望能够把它拖出来就显示到设计面板上，当然我试了把[Designer(typeof(CompDesigner1))]去掉就可以了，不过我在
CompDesigner1中给组件加了几个菜单，用来自动生成一些熟悉，所以我希望能够显示出控件，这些自定义的菜单也能保留，我知道这样肯定是可以的，VS自带了许多控件都有这个功能，比如combobox，鼠标瞄上面后，它的右上角会出现一个小箭头，点击就会出来一系列菜单，我就是想实现这个效果，请大师们指教，下面是我类的申明：    [ToolboxItem(true)]
    [ToolboxBitmap(@"D:\BjdddCSharpDev\Components\Resources\1.bmp")]
    [Designer(typeof(CompDesigner1))]
    public partial class ComponentTest1 : PictureBox其中CompDesigner1继承于：    public class CompDesigner1 : ComponentDesigner

Answer 1

trypublic class CompDesigner1 : ComponentDesigner
=》
public class CompDesigner1 : DocumentDesigner

Answer 2

非常感谢，但是我生成后拖出来抛错，不知道是什么原因
抛错如下：服务容器中已存在服务System.Windows.Forms.Design.IEventHandlerService.
         参数名:serviceType
请帮我分析下，谢谢

Answer 3

我的代码是：
using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel.Design;
using System.Windows.Forms;
using System.ComponentModel;
using System.Windows.Forms.Design;namespace Bjddd.Dev.Components
{
    public class CompDesigner1 : DocumentDesigner
    {
        ComponentTest test;
        IDesignerHost host;
        IComponentChangeService service;
        DesignerTransaction designTran;
        string testName;        DesignerVerbCollection m_verbs;        public override DesignerVerbCollection Verbs
        {
            get
            {
                if (m_verbs == null)
                {
                    m_verbs = new DesignerVerbCollection();
                    m_verbs.Add(new DesignerVerb("生成东东", new EventHandler(OnGen)));
                    m_verbs.Add(new DesignerVerb("生成DD", new EventHandler(OnDD)));
                }
                return m_verbs;
            }
        }        private void OnGen(object sender, EventArgs e)
        {
            if (Component is ComponentTest)
            {
                test = (ComponentTest)Component;
                host = (IDesignerHost)GetService(typeof(IDesignerHost));
                testName = TypeDescriptor.GetProperties(Component)["Name"].GetValue(Component).ToString();                if (host == null)
                {
                    return;
                }                if (test.ID != 1000000)
                {
                    designTran = host.CreateTransaction();
                    service = (IComponentChangeService)GetService(typeof(IComponentChangeService));
                    test.ID = 1000000;
                    service.OnComponentChanged(test, null, null, null);
                    designTran.Commit();
                    MessageBox.Show("生成成功!");
                }
            }
        }        private void OnDD(object sender, EventArgs e)
        {
            if (Component is ComponentTest)
            {
                test = (ComponentTest)Component;
                host = (IDesignerHost)GetService(typeof(IDesignerHost));
                testName = TypeDescriptor.GetProperties(Component)["Name"].GetValue(Component).ToString();                if (host == null)
                {
                    return;
                }                if (test.Fields != null)
                {
                    designTran = host.CreateTransaction();
                    service = (IComponentChangeService)GetService(typeof(IComponentChangeService));
                    test.Fields.Add(1);
                    test.Fields.Add(2);
                    service.OnComponentChanged(test, null, null, null);
                    Button b = (Button)host.CreateComponent(typeof(Button));
                    
                    designTran.Commit();
                    MessageBox.Show("生成成功!");
                }
            }
        }    }
}

Answer 4

可以，启动两个vs.net ，一个加载控件，一个附加到那个vs.net 的进程