SQLServerDAL/newcenter.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newcenter。
	/// </summary>
	public class newcenter:Inewcenter
	{
		public newcenter()
		{}
		#region  成员方法

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

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int nid)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from newcenter");
			strSql.Append(" where nid=@nid ");
			SqlParameter[] parameters = {
					new SqlParameter("@nid", SqlDbType.Int,4)};
			parameters[0].Value = nid;

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


		/// <summary>
		/// 增加一条数据
		/// </summary>
		public int Add(CAI.SHOP.Model.newcenter model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into newcenter(");
			strSql.Append("newtitle,newcontact,newshijian,hittime)");
			strSql.Append(" values (");
			strSql.Append("@newtitle,@newcontact,@newshijian,@hittime)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
					new SqlParameter("@newtitle", SqlDbType.VarChar,50),
					new SqlParameter("@newcontact", SqlDbType.Text),
					new SqlParameter("@newshijian", SqlDbType.DateTime),
					new SqlParameter("@hittime", SqlDbType.Int,4)};
			parameters[0].Value = model.newtitle;
			parameters[1].Value = model.newcontact;
			parameters[2].Value = model.newshijian;