.net WinForm用户控件开发--(6)用户控件弹出式属性设置

这一节给大家演示下怎样使属性值以弹出式对话框的形式显示出来，先来看下效果图.

这里我们定义一个用户控件，并为用户控件设置一个属性，使用弹出式对话框为属性设置值。

定义属性ShowPropery

代码如下

[csharp]
public partial class UCLab : UserControl
    {
        public UCLab()
        {
            InitializeComponent();
        }

        private string showpropery;
        [Description("弹出属性")]
        [Editor(typeof(ShowTypeDialogEditor),typeof(UITypeEditor))]
        public string ShowPropery
        {
            get
            {
                return showpropery;
            }
            set
            {
                showpropery = value;
            }
        }

public partial class UCLab : UserControl
    {
        public UCLab()
        {
            InitializeComponent();
        }

        private string showpropery;
        [Description("弹出属性")]
        [Editor(typeof(ShowTypeDialogEditor),typeof(UITypeEditor))]
        public string ShowPropery
        {
            get
            {
                return showpropery;
            }
            set
            {
                showpropery = value;
            }
        }
[csharp] view plaincopyprint?}

}
然后我们为属性设置弹出式属性编辑器，需要继承UITypeEditor类，代码如下

[csharp]
/// <summary>
   /// 弹出式编辑器
   /// </summary>
   public class ShowTypeDialogEditor : UITypeEditor
   {

       public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
       {
           if (context!=null&&context.Instance!=null)
           {
               return UITypeEditorEditStyle.Modal;//显示一个省略号
           }
           return base.GetEditStyle(context);
       }

       public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
       {
           System.Windows.Forms.Design.IWindowsFormsEditorService editorService = null;
           if (context!=null&&context.Instance!=null&&provider!=null)
           {
               editorService =(System.Windows.Forms.Design.IWindowsFormsEditorService)provider.GetService(typeof(System.Windows.Forms.Design.IWindowsFormsEditorService));
               if (editorService!=null)
               {
                   UCLab uclab =(UCLab)context.Instance;
                   ShowForm sf = new ShowForm(uclab.ShowPropery);
                   if (sf.ShowDialog()==DialogResult.OK)
                   {
                          value = sf.Result;
                           return value;
                   }
               }
           }
           //return base.EditValue(context, provider, value);
               return value;
       }
   }

/// <summary>
    /// 弹出式编辑器
    /// </summary>
    public class ShowTypeDialogEditor : UITypeEditor
    {

        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
        {
            if (context!=null&&context.Instance!=null)
            {
     &nbs

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