SQLServerDAL/city_table.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using CAI.SHOP.IDAL;
using Maticsoft.DBUtility;//请先添加引用
namespace CAI.SHOP.SQLServerDAL
{
	/// <summary>
	/// 数据访问类city_table。
	/// </summary>
	public class city_table:Icity_table
	{
		public city_table()
		{}
		#region  成员方法

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int id)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from city_table");
			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(CAI.SHOP.Model.city_table model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into city_table(");
			strSql.Append("oneid,twoid,three,name)");
			strSql.Append(" values (");
			strSql.Append("@oneid,@twoid,@three,@name)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
					new SqlParameter("@oneid", SqlDbType.Int,4),
					new SqlParameter("@twoid", SqlDbType.Int,4),
					new SqlParameter("@three", SqlDbType.Int,4),
					new SqlParameter("@name", SqlDbType.VarChar,50)};
			parameters[0].Value = model.oneid;
			parameters[1].Value = model.twoid;
			parameters[2].Value = model.three;
			parameters[3].Value = model.name;

			object obj = DbHelperSQL.GetSingle(strSql.ToString(),parameters);
			if (obj == null)
			{
				return 1;
			}
			else