反射读取实体类时出问题

Question

反射

Answer 1

属性上没有定义attribute吧？实体类贴出来。

Answer 2

[Table(TableName ="dbo.emp")]
public Class Emp
{
      [Column(ColumnName="ID")]
      public int ID {get; set;}
}

Answer 3

/// <summary>
        /// 获得单个实体
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static T Entity<T>(DataRow dr)
        {
            if (dr == null)
            {
                return default(T);
            }
            T entity = default(T);            entity = Activator.CreateInstance<T>();
            PropertyInfo[] pis = entity.GetType().GetProperties();
            foreach (PropertyInfo pi in pis)
            {
                if (dr[pi.Name] != null)
                {
                    if (!pi.CanWrite)
                    {
                        continue;
                    }
                    if (dr[pi.Name] != DBNull.Value)
                    {
                        Type t = pi.PropertyType;
                        if (t.FullName == "System.Guid")
                        {
                            pi.SetValue(entity, Guid.Parse(dr[pi.Name].ToString()), null);
                        }
                        else
                        {
                            pi.SetValue(entity, dr[pi.Name], null);
                        }
                    }
                }
            }            return entity;
        }

Answer 4

不是很明白，实体类如下
namespace Eefo.BusinessEntity
{
    using System;
    using System.Collections;
    using System.Data;
    using PersistenceLayer;
    
    /// <summary>该类的摘要说明</summary>
    public class TB_ZSK_XZSP_01Entity : EntityObject
    {
        /// <summary>NB_ID</summary>
        public const string @__NB_ID = "NB_ID";
        /// <summary>VAR_DWMC</summary>
        public const string @__VAR_DWMC = "VAR_DWMC";
        /// <summary>VAR_TITLE</summary>
        public const string @__VAR_TITLE = "VAR_TITLE";
        /// <summary>LG_CONTENT</summary>
        public const string @__LG_CONTENT = "LG_CONTENT";
        /// <summary>VAR_FLYJ</summary>
        public const string @__VAR_FLYJ = "VAR_FLYJ";
        /// <summary>VAR_ADDRESS</summary>
        public const string @__VAR_ADDRESS = "VAR_ADDRESS";
        /// <summary>NB_SFYX</summary>
        public const string @__NB_SFYX = "NB_SFYX";
        /// <summary>DT_TJSJ</summary>
        public const string @__DT_TJSJ = "DT_TJSJ";
        /// <summary>VAR_TJZH</summary>
        public const string @__VAR_TJZH = "VAR_TJZH";
        /// <summary>VAR_ORGCODE</summary>
        public const string @__VAR_ORGCODE = "VAR_ORGCODE";
        /// <summary>DT_BJSJ</summary>
        public const string @__DT_BJSJ = "DT_BJSJ";
        /// <summary>VAR_BJZH</summary>
        public const string @__VAR_BJZH = "VAR_BJZH";
        /// <summary>VAR_ZSKNO</summary>
        public const string @__VAR_ZSKNO = "VAR_ZSKNO";
        private decimal m_NB_ID;
        private string m_VAR_DWMC;
        private string m_VAR_TITLE;
        private string m_LG_CONTENT;
        private string m_VAR_FLYJ;
        private string m_VAR_ADDRESS;
        private decimal m_NB_SFYX;
        private System.DateTime m_DT_TJSJ = new DateTime(1900,1,1);
        private string m_VAR_TJZH;
        private string m_VAR_ORGCODE;
        private System.DateTime m_DT_BJSJ = new DateTime(1900,1,1);
        private string m_VAR_BJZH;
        private string m_VAR_ZSKNO;
        public TB_ZSK_XZSP_01Entity()
        {
        }
        /// <summary>属性NB_ID </summary>
        public decimal NB_ID
        {
            get
            {
                return this.m_NB_ID;
            }
            set
            {
                this.m_NB_ID = value;
            }
        }
        /// <summary>属性VAR_DWMC </summary>
        public string VAR_DWMC
        {
            get
            {
                return this.m_VAR_DWMC;
            }
            set
            {
                this.m_VAR_DWMC = value;
            }
        }
        /// <summary>属性VAR_TITLE </summary>
        public string VAR_TITLE
        {
            get
            {
                return this.m_VAR_TITLE;
            }
            set
            {
                this.m_VAR_TITLE = value;
            }
        }
        /// <summary>属性LG_CONTENT </summary>
        public string LG_CONTENT
        {
            get
            {
                return this.m_LG_CONTENT;
            }
            set
            {
                this.m_LG_CONTENT = value;
            }
        }
        /// <summary>属性VAR_FLYJ </summary>
        public string VAR_FLYJ
        {
            get
            {
                return this.m_VAR_FLYJ;
            }
            set
            {
                this.m_VAR_FLYJ = value;
            }
        }
        /// <summary>属性VAR_ADDRESS </summary>
        public string VAR_ADDRESS
        {
            get
            {
                return this.m_VAR_ADDRESS;
            }
            set
            {
                this.m_VAR_ADDRESS = value;
            }
        }
        /// <summary>属性NB_SFYX </summary>
        public decimal NB_SFYX
        {
            get
            {
                return this.m_NB_SFYX;
            }
            set
            {
                this.m_NB_SFYX = value;
            }
        }
        /// <summary>属性DT_TJSJ </summary>
        public System.DateTime DT_TJSJ
        {
            get
            {
                return this.m_DT_TJSJ;
            }
            set
            {
                this.m_DT_TJSJ = value;
            }
        }
        /// <summary>属性VAR_TJZH </summary>
        public string VAR_TJZH
        {
            get
            {
                return this.m_VAR_TJZH;
            }
            set
            {
                this.m_VAR_TJZH = value;
            }
        }
        /// <summary>属性VAR_ORGCODE </summary>
        public string VAR_ORGCODE
        {
            get
            {
                return this.m_VAR_ORGCODE;
            }
            set
            {
                this.m_VAR_ORGCODE = value;
            }
        }
        /// <summary>属性DT_BJSJ </summary>
        public System.DateTime DT_BJSJ
        {
            get
            {
                return this.m_DT_BJSJ;
            }
            set
            {
                this.m_DT_BJSJ = value;
            }
        }
        /// <summary>属性VAR_BJZH </summary>
        public string VAR_BJZH
        {
            get
            {
                return this.m_VAR_BJZH;
            }
            set
            {
                this.m_VAR_BJZH = value;
            }
        }
        /// <summary>属性VAR_ZSKNO </summary>
        public string VAR_ZSKNO
        {
            get
            {
                return this.m_VAR_ZSKNO;
            }
            set
            {
                this.m_VAR_ZSKNO = value;
            }
        }
    }

Answer 5

不是很明白，实体类如下
namespace Eefo.BusinessEntity
{
    using System;
    using System.Collections;
    using System.Data;
    using PersistenceLayer;
    
    /// <summary>该类的摘要说明</summary>
    public class TB_ZSK_XZSP_01Entity : EntityObject
    {
        /// <summary>NB_ID</summary>
        public const string @__NB_ID = "NB_ID";
        /// <summary>VAR_DWMC</summary>
        public const string @__VAR_DWMC = "VAR_DWMC";
        /// <summary>VAR_TITLE</summary>
        public const string @__VAR_TITLE = "VAR_TITLE";
        /// <summary>LG_CONTENT</summary>
        public const string @__LG_CONTENT = "LG_CONTENT";
        /// <summary>VAR_FLYJ</summary>
        public const string @__VAR_FLYJ = "VAR_FLYJ";
        /// <summary>VAR_ADDRESS</summary>
        public const string @__VAR_ADDRESS = "VAR_ADDRESS";
        /// <summary>NB_SFYX</summary>
        public const string @__NB_SFYX = "NB_SFYX";
        /// <summary>DT_TJSJ</summary>
        public const string @__DT_TJSJ = "DT_TJSJ";
        /// <summary>VAR_TJZH</summary>
        public const string @__VAR_TJZH = "VAR_TJZH";
        /// <summary>VAR_ORGCODE</summary>
        public const string @__VAR_ORGCODE = "VAR_ORGCODE";
        /// <summary>DT_BJSJ</summary>
        public const string @__DT_BJSJ = "DT_BJSJ";
        /// <summary>VAR_BJZH</summary>
        public const string @__VAR_BJZH = "VAR_BJZH";
        /// <summary>VAR_ZSKNO</summary>
        public const string @__VAR_ZSKNO = "VAR_ZSKNO";
        private decimal m_NB_ID;
        private string m_VAR_DWMC;
        private string m_VAR_TITLE;
        private string m_LG_CONTENT;
        private string m_VAR_FLYJ;
        private string m_VAR_ADDRESS;
        private decimal m_NB_SFYX;
        private System.DateTime m_DT_TJSJ = new DateTime(1900,1,1);
        private string m_VAR_TJZH;
        private string m_VAR_ORGCODE;
        private System.DateTime m_DT_BJSJ = new DateTime(1900,1,1);
        private string m_VAR_BJZH;
        private string m_VAR_ZSKNO;
        public TB_ZSK_XZSP_01Entity()
        {
        }
        /// <summary>属性NB_ID </summary>
        public decimal NB_ID
        {
            get
            {
                return this.m_NB_ID;
            }
            set
            {
                this.m_NB_ID = value;
            }
        }
        /// <summary>属性VAR_DWMC </summary>
        public string VAR_DWMC
        {
            get
            {
                return this.m_VAR_DWMC;
            }
            set
            {
                this.m_VAR_DWMC = value;
            }
        }
        /// <summary>属性VAR_TITLE </summary>
        public string VAR_TITLE
        {
            get
            {
                return this.m_VAR_TITLE;
            }
            set
            {
                this.m_VAR_TITLE = value;
            }
        }
        /// <summary>属性LG_CONTENT </summary>
        public string LG_CONTENT
        {
            get
            {
                return this.m_LG_CONTENT;
            }
            set
            {
                this.m_LG_CONTENT = value;
            }
        }
        /// <summary>属性VAR_FLYJ </summary>
        public string VAR_FLYJ
        {
            get
            {
                return this.m_VAR_FLYJ;
            }
            set
            {
                this.m_VAR_FLYJ = value;
            }
        }
        /// <summary>属性VAR_ADDRESS </summary>
        public string VAR_ADDRESS
        {
            get
            {
                return this.m_VAR_ADDRESS;
            }
            set
            {
                this.m_VAR_ADDRESS = value;
            }
        }
        /// <summary>属性NB_SFYX </summary>
        public decimal NB_SFYX
        {
            get
            {
                return this.m_NB_SFYX;
            }
            set
            {
                this.m_NB_SFYX = value;
            }
        }
        /// <summary>属性DT_TJSJ </summary>
        public System.DateTime DT_TJSJ
        {
            get
            {
                return this.m_DT_TJSJ;
            }
            set
            {
                this.m_DT_TJSJ = value;
            }
        }
        /// <summary>属性VAR_TJZH </summary>
        public string VAR_TJZH
        {
            get
            {
                return this.m_VAR_TJZH;
            }
            set
            {
                this.m_VAR_TJZH = value;
            }
        }
        /// <summary>属性VAR_ORGCODE </summary>
        public string VAR_ORGCODE
        {
            get
            {
                return this.m_VAR_ORGCODE;
            }
            set
            {
                this.m_VAR_ORGCODE = value;
            }
        }
        /// <summary>属性DT_BJSJ </summary>
        public System.DateTime DT_BJSJ
        {
            get
            {
                return this.m_DT_BJSJ;
            }
            set
            {
                this.m_DT_BJSJ = value;
            }
        }
        /// <summary>属性VAR_BJZH </summary>
        public string VAR_BJZH
        {
            get
            {
                return this.m_VAR_BJZH;
            }
            set
            {
                this.m_VAR_BJZH = value;
            }
        }
        /// <summary>属性VAR_ZSKNO </summary>
        public string VAR_ZSKNO
        {
            get
            {
                return this.m_VAR_ZSKNO;
            }
            set
            {
                this.m_VAR_ZSKNO = value;
            }
        }
    }看你的代码，你的类自定义属性中并没有DataContextAttribute这个属性 当然没有值了
GetCustomerAttributes 获取的是属性上的自定义属性值比如
public class Test
{
       [“自定义属性”]
       public int Id {get;set;}
}

Answer 6

你的实体类中没有Attribute
public class Test
{
       [“自定义属性”]//看这里
       public int Id {get;set;}
}
你的类的属性上面那个有中括号？

Answer 7

哦，意思是说每个字段前面我都要加上["DataContextAttribute"]这样就行了吗
public class Test
{
       [“DataContextAttribute”]
       public int Id {get;set;}
       [“DataContextAttribute”]
       public int name {get;set;}
}