ToMoral.DAL/Param_City.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using tomoral.DBUtility;//Please add references
namespace tomoral.DAL
{
	/// <summary>
	/// 数据访问类:Param_City
	/// </summary>
	public partial class Param_City
	{
		public Param_City()
		{}
		#region  Method

		/// <summary>
		/// 得到最大ID
		/// </summary>
		public int GetMaxId()
		{
		return DbHelperSQL.GetMaxID("id", "Param_City"); 
		}

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int id)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from Param_City");
			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(tomoral.Model.Param_City model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into Param_City(");
			strSql.Append("parentid,City,Create_id,Create_date,Update_id,Update_date)");
			strSql.Append(" values (");
			strSql.Append("@parentid,@City,@Create_id,@Create_date,@Update_id,@Update_date)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
					new SqlParameter("@parentid", SqlDbType.Int,4),
					new SqlParameter("@City", SqlDbType.VarChar,250),
					new SqlParameter("@Create_id", SqlDbType.Int,4),
					new SqlParameter("@Create_date", SqlDbType.DateTime),
					new SqlParameter("@Update_id", SqlDbType.Int,4),
					new SqlParameter("@Update_date", SqlDbType.DateTime)};
			parameters[0].Value = model.parentid;
			parameters[1].Value = model.City;