以下为引用的内容：

[EditorAttribute(typeof(System.Web.UI.Design.UrlEditor), typeof(UITypeEditor))]

以下为引用的内容：

[EditorAttribute(typeof(System.Windows.Forms.Design.FolderNameEditor), typeof(UITypeEditor))]

以下为引用的内容：

using System;
using System.Collections.Generic;
using System.Drawing.Design;
using System.ComponentModel;
using System.Windows.Forms.Design;
using System.Text;

namespace EndWell
{
    class DualModeFolderEditor : UITypeEditor
    {
        // ---- GetEditStyle --------------------------------
        //
        // tell designer what kind of UI we are (Dropdown or Modal DialogBox)

        public override UITypeEditorEditStyle 
           GetEditStyle(ITypeDescriptorContext context)
        {
             return UITypeEditorEditStyle.Modal;
        }

        // ---- EditValue ----------------------------------------
        //
        // Called by IDE designer when user clicks the ... button
        // A DialogBox is launched

        public override object EditValue(ITypeDescriptorContext Context,
                                         IServiceProvider Provider,
                                         object Value)
        {           
            IWindowsFormsEditorService EditorService = null;
            if (Provider != null)
            {
                EditorService = (IWindowsFormsEditorService)
                   Provider.GetService(typeof(IWindowsFormsEditorService));
            }
            if (EditorService != null)
            {
                // launch the dialog box
                DuaModeFolderEditorForm Editor = 
                   new DuaModeFolderEditorForm(Value.ToString(), Context);
                
                EditorService.ShowDialog(Editor);
                return Editor.m_Value;
            }
            else
            {
                 return Value;
            }
        }
    }
}