SuLei.DAL/sl_article_comment.cs

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using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Reflection;
using System.Text;
using SuLei.DBUtility;
using SuLei.Common;

namespace SuLei.DAL
{
    /// <summary>
    /// 数据访问类:用户评论表
    /// </summary>
    public partial class sl_article_comment
    {
        private string databaseprefix; //数据库表名前缀
        public sl_article_comment(string _databaseprefix)
        {
            databaseprefix = _databaseprefix;
        }

        #region 基本方法================================
        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from  " + databaseprefix + "article_comment");
            strSql.Append(" where ");
            strSql.Append(" id = @id  ");
            SqlParameter[] parameters = {
					new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = id;

            return DbHelperSQL.Exists(strSql.ToString(), parameters);
        }

        /// <summary>
        /// 增加一条数据
        /// </summary>
        public int Add(Model.sl_article_comment model)
        {
            StringBuilder strSql = new StringBuilder();
            StringBuilder str1 = new StringBuilder();//数据字段
            StringBuilder str2 = new StringBuilder();//数据参数
            //利用反射获得属性的所有公共属性
            PropertyInfo[] pros = model.GetType().GetProperties();
            List<SqlParameter> paras = new List<SqlParameter>();
            strSql.Append("insert into  " + databaseprefix + "article_comment(");
            foreach (PropertyInfo pi in pros)
            {
                //如果不是主键则追加sql字符串
                if (!pi.Name.Equals("id"))
                {
                    //判断属性值是否为空
                    if (pi.GetValue(model, null) != null)
                    {
                        str1.Append(pi.Name + ",");//拼接字段