DAL/GongGaoInfoService.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;

namespace DAL
{
	/// <summary>
	/// 数据访问类GongGaoInfoService。
	/// </summary>
	public class GongGaoInfoService
	{
		public GongGaoInfoService()
		{}
		#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 GongGaoInfo");
			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 static int Add(Model.GongGaoInfo model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into GongGaoInfo(");
			strSql.Append("title,gongGaoContent,status,addTime,addUser,infoType,linkurl)");
			strSql.Append(" values (");
			strSql.Append("@title,@gongGaoContent,@status,@addTime,@addUser,@infoType,@linkurl)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
					new SqlParameter("@title", SqlDbType.VarChar,50),
					new SqlParameter("@gongGaoContent", SqlDbType.VarChar,500),
					new SqlParameter("@status", SqlDbType.Int,4),
					new SqlParameter("@addTime", SqlDbType.DateTime),
					new SqlParameter("@addUser", SqlDbType.Int,4),
					new SqlParameter("@infoType", SqlDbType.Int,4),new SqlParameter("@linkurl",SqlDbType.VarChar,150)};
			parameters[0].Value = model.title;
			parameters[1].Value = model.gongGaoContent;
			parameters[2].Value = model.status;
			parameters[3].Value = model.addTime;
			parameters[4].Value = model.addUser;
			parameters[5].Value = model.infoType;
            parameters[6].Value = model.linkurl;
			object obj = DBHelperSQL.GetSingle(strSql.ToString(),parameters);
			if (obj == null)
			{
				return 1;