DAL/DayiDAO.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MODEL;
using System.Data;
using System.Data.SqlClient;

namespace DAL
{
    public class DayiDAO
    {
        private SQLHelper sqlhelper;
        public DayiDAO()
        {
            sqlhelper = new SQLHelper();
        }
        #region 学生提交问题
        /// <summary>
        /// 学生提交问题
        /// </summary>
        /// <param name="n">答疑实体类</param>
        /// <returns></returns>
        public bool Insert(dayi n)
        {
            bool flag = false;
            SqlParameter[] paras = new SqlParameter[]
            {
                new SqlParameter("@classId",n.ClassId),
                new SqlParameter("@creater",n.Creater),
                new SqlParameter("@modifier",n.Creater),
                new SqlParameter("@dayiName",n.DayiName),
                new SqlParameter("@publishTime",n.PublishTime ),
                new SqlParameter("@questionContent",n.QuestionContent ),
                new SqlParameter("@studentId",n.StudentId ),
            };
            int res = sqlhelper.ExecuteNonQuery("INSERT INTO dayi (classId, creater, modifier, dayiName,publishTime, questionContent, studentId) VALUES (@classId,@creater,@creater,@dayiName,@publishTime,@questionContent,@studentId)", paras, CommandType.Text);
            if (res > 0)
            {
                flag = true;
            }
            return flag;
        }
        #endregion
        #region 学生更新问题
        /// <summary>
        /// 学生更新问题
        /// </summary>
        /// <param name="n">答疑实体类</param>
        public void UpdateByStu(dayi n)
        {
            SqlParameter[] paras = new SqlParameter[]
            {
                new SqlParameter("@classId",n.ClassId),
                new SqlParameter("@modifier",n.Modifier),
                new SqlParameter("@dayiName",n.DayiName),
                new SqlParameter("@publishTime",n.PublishTime ),
                new SqlParameter("@questionContent",n.QuestionContent ),
                new SqlParameter("@dayiId",n.DayiId ),
            };