MxWeiXinPF.DAL/agent/manager.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using MxWeiXinPF.DBUtility;
using MxWeiXinPF.Common;

namespace MxWeiXinPF.DAL
{
    /// <summary>
    /// 数据访问类:管理员
    /// </summary>
    public partial class manager
    {
        private string databaseprefix; //数据库表名前缀
        public manager(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 + "manager");
            strSql.Append(" where id=@id ");
            SqlParameter[] parameters = {
					new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = id;

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

        /// <summary>
        /// 查询用户名是否存在
        /// </summary>
        public bool Exists(string user_name)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from " + databaseprefix + "manager");
            strSql.Append(" where user_name=@user_name ");
            SqlParameter[] parameters = {
					new SqlParameter("@user_name", SqlDbType.NVarChar,100)};
            parameters[0].Value = user_name;

            return DbHelperSQL.Exists(strSql.ToString(), parameters);
        }
        /// <summary>
        /// 查询用户名是否存在
        /// </summary>
        public bool Exists(string user_name,string email)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from " + databaseprefix + "manager");
            strSql.Append(" where user_name=@user_name and email=@email ");
            SqlParameter[] parameters = {
					new SqlParameter("@user_name", SqlDbType.NVarChar,100),
                    new SqlParameter("@email", SqlDbType.NVarChar,100)};