DTcms.DAL/DTcms.DAL/user_addr_book.cs

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

namespace DTcms.DAL
{
	public class user_addr_book
	{
		private string databaseprefix;

		public user_addr_book(string _databaseprefix)
		{
			this.databaseprefix = _databaseprefix;
		}

		public bool Exists(int id)
		{
			StringBuilder strSql = new StringBuilder();
			strSql.Append("select count(1) from " + this.databaseprefix + "user_addr_book");
			strSql.Append(" where id=@id");
			SqlParameter[] parameters = new SqlParameter[]
			{
				new SqlParameter("@id", SqlDbType.Int, 4)
			};
			parameters[0].Value = id;
			return DbHelperSQL.Exists(strSql.ToString(), parameters);
		}

		public bool Exists(int id, string user_name)
		{
			StringBuilder strSql = new StringBuilder();
			strSql.Append("select count(1) from " + this.databaseprefix + "user_addr_book");
			strSql.Append(" where id=@id and user_name=@user_name");
			SqlParameter[] parameters = new SqlParameter[]
			{
				new SqlParameter("@id", SqlDbType.Int, 4),
				new SqlParameter("@user_name", SqlDbType.NVarChar, 100)
			};
			parameters[0].Value = id;
			parameters[1].Value = user_name;
			return DbHelperSQL.Exists(strSql.ToString(), parameters);
		}

		public int Add(DTcms.Model.user_addr_book model)
		{
			StringBuilder strSql = new StringBuilder();
			strSql.Append("insert into " + this.databaseprefix + "user_addr_book(");
			strSql.Append("user_id,user_name,accept_name,area,address,mobile,telphone,email,post_code,is_default,add_time)");
			strSql.Append(" values (");
			strSql.Append("@user_id,@user_name,@accept_name,@area,@address,@mobile,@telphone,@email,@post_code,@is_default,@add_time)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = new SqlParameter[]
			{
				new SqlParameter("@user_id", SqlDbType.Int, 4),
				new SqlParameter("@user_name", SqlDbType.NVarChar, 100),