namespace Entity
{
    /// <summary>
    /// 用户登录消息
    /// </summary>
    public class UserLoginMessage : IEntity
    {
        List<string> message = new List<string>();
        /// <summary>
        /// 列表
        /// </summary>
        public List<string> List
        {
            get { return this.message; }
        }

public IDataEntity Entity { get; set; }

#region IEntity 成员

public bool IsValid
        {
            get { return this.message.Count == 0; }
        }

public IEnumerable<RuleViolation> GetRuleViolations()
        {
            throw new Exception("不提供本方法");
        }

#endregion

}
}

namespace Entity
{
    /// <summary>
    /// 模型接口,与数据库无关
    /// </summary>
    public interface IEntity
    {
        /// <summary>
        /// 数据验证(是否成功)
        /// </summary>
        bool IsValid { get; }
        /// <summary>
        /// 获取验证失败的信息枚举,它使用了简单的迭代器,如果GetRuleViolations有错误则返回假
        /// </summary>
        /// <returns></returns>
        IEnumerable<RuleViolation> GetRuleViolations();
       
    }
}

namespace Entity
{
    /// <summary>
    /// 数据库对象统一协调接口
    /// </summary>
    public interface IDataEntity
    {

}
}