通过特性动态获取属性及值

 

 


using System.Collections.Generic;
using System.Data.SqlClient;
using System.Data;
using System;

namespace NPetshop.Domain
{
 /***************************************************************************
 * 
 *       功能：     product实体类
 *       作者：     李伟伟
 *       日期：     2011-5-28
 *       描述：     11111111111111111111111111
 * *************************************************************************/
 [Serializable]
    public  class productEntity 
    { 
  #region 属性
  /// <summary>
        /// 获取或设置Id字段的值 自增列 System.Int32
  /// 数据库类型长度:int 大小:4 精度:10
        /// </summary>
        [Column("Id")]
        public System.Int32 Id{get; set;}
  
  /// <summary>
        /// 获取或设置Name字段的值  System.String
  /// 数据库类型长度:varchar 大小:50 
        /// </summary>
        [Column("Name")]
        public System.String Name{get; set;}
  
  /// <summary>
        /// 获取或设置UserId字段的值  System.Int32
  /// 数据库类型长度:int 大小:4 精度:10
        /// </summary>
        [Column("UserId")]
        public System.Int32 UserId{get; set;}
  
  #endregion
  
  #region 构造函数
  
  /// <summary>
     /// 构造函数
    /// </summary>
  /// <param name="name">Name</param>
  /// <param name="userId">UserId</param>
        public productEntity(System.String name,System.Int32 userId)
        {
   this.Name = name;
   this.UserId = userId;
  }
  
  /// <summary>
     /// 构造函数
    /// </summary>
  public productEntity()
        {
   this.Name = null;
   this.UserId = 0;
  }
        #endregion
    }
}

 

//特性

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;

namespace NPetshop.Domain
{
    /// <summary>
    /// 将类的属性与数据库表中的列相关联。
    /// </summary>
    [AttributeUsage(AttributeTargets.Property)]
    public sealed class ColumnAttribute : System.Attribute
    {
        /// <summary>
        /// 获取或设置列的名称。
        /// </summary>
        public string ColumnName { get; private set; }

        /// <summary>
        /// 获取或设置列的标题。
        /// </summary>
        public string ColumnCaption { get; private set; }

        /// <summary>
        /// 获取或设置列的类型。
        /// </summary>
        public SqlDbType ColumnType { get; private set; }

        /// <summary>
        /// 初始化 MagicStar.Entity.ColumnAttribute 类的一个新实例。
        /// </summary>
        /// <param name="columnCaption">表或视图的标题。</param>
        /// <param name="columnName">表或视图的名称。</param>
        /// <param name="columnType">类型。</param>
        public ColumnAttribute(string columnName, string columnCaption, SqlDbType columnType)
        {
            ColumnName = columnName;
            ColumnCaption = columnCaption;
            ColumnType = columnType;
        }


        /// <summary>
        /// 初始化 MagicStar.Entity.ColumnAttribute 类的一个新实例。
        /// </summary>
        /// <param name="columnCaption">表或视图的标题。</param>
        /// <param name="columnName">表或视图的名称。</param>
        /// <param name="columnType">类型。</param>
        public ColumnAttribute(string columnName)
        {
            ColumnName = columnName;
        }
    }
}


        

 

///实现

           productEntity _roductEntity = new productEntity();
            _roductEntity.Id = 1;
            _roductEntity.Name = "2";


            Type type = _roductEntity.GetType();
            PropertyInfo[] properties = type.GetProperties();

            foreach (PropertyInfo property in properties)
            {
                Response.Write(type.GetProperty(property.Name).GetValue(_roductEntity, null));
                Response.Write(property.Name + "");
            }