关于PropertyGrid 下拉列表,C#实现,其实比较简单

一、自定义一个特性类 ListAttribute ，提供下拉列表值：

using System;

using System.Collections.Generic;

 using System.Text; using System.Collections;

namespace PropertyGrid {    

  class ListAttribute : Attribute     {        

      public string[] lists;

        public ListAttribute()         {

                lists = new string[] { "A", "B", "C", "D", "E" };//如果要实现动态下拉列表，在此处初始化lists对象值   

             }    

    }

}

 二、一时想不起来了，就叫它特性转换器MyConverter

using System;

using System.Collections.Generic;

using System.Text;

 using System.ComponentModel;

namespace PropertyGrid {    

class MyConverter : ExpandableObjectConverter     {      

   public override bool GetStandardValuesSupported(ITypeDescriptorContext context)         {  

           return true;        

    }        

   public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)         {

             return true;

        }

        public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)         {

            ListAttribute lst = (ListAttribute)context.PropertyDescriptor.Attributes[typeof(ListAttribute)];                     StandardValuesCollection vals = new TypeConverter.StandardValuesCollection(lst.lists);            

return vals;        

}        

public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)         {

            return true;

        }

     }

}

三、应用示例：

using System;

using System.Collections.Generic;

using System.Text;

using System.ComponentModel;

namespace PropertyGrid {

     class MyObject     {

         private int id;

         public int ID         {

            get             {

                 return id;

             }

            set             {

                id = value;

            }

         }

        private string code;

         public string Code         {

            get             {

                 return code;

            }

            set             {

                 code = value;

            }

         }

         private string name;

        [CategoryAttribute("信息"),DescriptionAttribute("名称"),TypeConverter(typeof(MyConverter)),ListAttribute()]         public string Name         {

             get             {

                return name;

            }

            set             {

                name = value;

            }

        }

                public  MyObject()         {

            this.id = -1;  

           this.code = "";

             this.name = "";

        }

    }

}

这句你不会忘记吧：propertyGrid1.SelectedObject = new MyObject();

Ok，搞定！