系统代码/教师讲授课程维护.aspx.cs

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using System;
using System.Data;

public partial class 教师讲授课程维护 : System.Web.UI.Page
{
    Connect_DB db = new Connect_DB();//记得改链接数据库类的，链接字符串
    protected void Page_Load(object sender, EventArgs e)
    {
        Query();
    }

    protected void Query()
    {
        String snowPage = Request.QueryString["nowPage"];
        int nowPage;
        String sql = "select * from 讲授";
        String sql2 = "select count(*)  from 讲授";
        DataTable stuList = db.Query(sql);
        DataTable stuNum = db.Query(sql2);
        int isLast = 0;
        int isFont = 0;
        int num = int.Parse(stuNum.Rows[0][0].ToString());
        String stuArray;
        pageNum.Value = num.ToString();
        if (snowPage != null)//是否第一次加载
        {//后面post刷新
            nowPage = int.Parse(snowPage) - 1;//当前页面号减1等于对应的datatable的行记录
            if (nowPage == num - 1)
            {
                isLast = 1;//传给前端当前是否是最后页
            }
            if (nowPage == 0)
            {
                isFont = 1;//传给前端当前是否是第一页
            }
            stuArray = stuList.Rows[nowPage]["教师编号"].ToString() + "," + stuList.Rows[nowPage]["课程代号"].ToString() + "," + stuList.Rows[nowPage]["任课时间"].ToString() +  "," + isLast + "," + isFont;
            Response.Write(stuArray);
            Response.End();
        }
        else
        {
            nowPage = 0;//传一条数据给隐藏域
            id.Value = stuList.Rows[nowPage]["教师编号"].ToString();
            name.Value = stuList.Rows[nowPage]["课程代号"].ToString();
            time.Value = stuList.Rows[nowPage]["任课时间"].ToString();
        }
    }

    protected void 确认添加_Click(object sender, EventArgs e)
    {
        String num = 教师编号.Text;
        String name = 课程代号.Text;
        String sex = 任课时间.Text;
        String sql = "insert into 讲授(教师编号,课程代号,任课时间) values(\"" + num + "\",\"" + name + "\",\"" + sex + "\")";
        Insert(sql);
    }

    protected bool Insert(string sql)
    {
        try