YKT_DAL/DALHelp.cs

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using System;
using System.Collections.Generic;

using System.Text;
using YKT.DBUtility;
using System.Data.SqlClient;
using System.Data;
using YKT_Model;

namespace YKT_DAL
{
    public class DALHelp
    {
        #region  成员方法

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

        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int ID)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from YKT_Help");
            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 void Add(ModelHelp model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into YKT_Help(");
            strSql.Append("ID,ClassID,Title,Content,AddDateTime,Hits)");
            strSql.Append(" values (");
            strSql.Append("@ID,@ClassID,@Title,@Content,@AddDateTime,@Hits)");
            SqlParameter[] parameters = {
					new SqlParameter("@ID", SqlDbType.Int,4),
					new SqlParameter("@ClassID", SqlDbType.Int,4),
					new SqlParameter("@Title", SqlDbType.NVarChar,255),
					new SqlParameter("@Content", SqlDbType.NText),
					new SqlParameter("@AddDateTime", SqlDbType.DateTime),
					new SqlParameter("@Hits", SqlDbType.Int,4)};
            parameters[0].Value = model.ID;
            parameters[1].Value = model.ClassID;
            parameters[2].Value = model.Title;
            parameters[3].Value = model.Content;