TZ.DAL/Member_Point.cs

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using System;
using System.Data;
using System.Text;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Collections;
using TZ.Model;
using TZ.DBUtility;
using TZ.Common;

namespace TZ.DAL
{
    public class Member_Point
    {
        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from sys_member_point");
            strSql.Append(" where 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(TZ.Model.Member_Point model)
        {
            using (SqlConnection conn = new SqlConnection(DbHelperSQL.connectionString))
            {
                conn.Open();
                using (SqlTransaction trans = conn.BeginTransaction())
                {
                    try
                    {
                        StringBuilder strSql = new StringBuilder();
                        strSql.Append("insert into sys_member_point(");
                        strSql.Append("[member_id],[user_name],[value],[remark])");
                        strSql.Append(" values (");
                        strSql.Append("@member_id,@user_name,@value,@remark)");
                        strSql.Append(";select @@IDENTITY");
                        SqlParameter[] parameters = {
					                   new SqlParameter("@member_id", SqlDbType.Int,4),
					                   new SqlParameter("@user_name", SqlDbType.NVarChar,100),
					                   new SqlParameter("@value", SqlDbType.Int,4),
					                   new SqlParameter("@remark", SqlDbType.NVarChar,200)};
                        parameters[0].Value = model.Member_id;
                        parameters[1].Value = model.User_name;
                        parameters[2].Value = model.Value;
                        parameters[3].Value = model.Remark;
                        object obj = DbHelperSQL.GetSingle(conn, trans, strSql.ToString(), parameters); //带事务
                        model.Id = Convert.ToInt32(obj);

                        //扣减积分
                        StringBuilder strSql2 = new StringBuilder();