admin/manage_works.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
namespace 作业.admin
{
    public partial class manage_works : System.Web.UI.Page
    {
        static string connstr = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"];//定义静态链接数据库参数
        SqlConnection Conn = new SqlConnection(connstr);//定义连接SQL数据库连接对象conn
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
            }
        }
        //
        public string bind_bj(int id)
        {
            string s;
            string sql = "select * from bj where bj_id=" + id;
            SqlCommand cmd = new SqlCommand(sql, Conn);
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = cmd;
            DataSet ds = new DataSet();
            da.Fill(ds, "fl");
            DataTable dt = ds.Tables["fl"];
            s = dt.Rows[0]["bj"].ToString();
            return s;
        }
        //
        public string bind_kc(int id)
        {
            string s;
            string sql = "select * from zuoye where zuoye_id=" + id;
            SqlCommand cmd = new SqlCommand(sql, Conn);
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = cmd;
            DataSet ds = new DataSet();
            da.Fill(ds, "z");
            DataTable dt = ds.Tables["z"];
            s = dt.Rows[0]["kc"].ToString();
            return s;
        }
        //
        public void bind()
        {
            string sql = "select * from works order by works_id desc";//构造选出所有字段的SQL语句
            SqlCommand cmd = new SqlCommand(sql, Conn);//创建一个command对象，装载的参数分别是SQL语句和一个连接对象Conn
            SqlDataAdapter da = new SqlDataAdapter();//建立一个数据连接器
            da.SelectCommand = cmd;//da的选择COMMAND对象是cmd
            DataSet ds = new DataSet();//建立一个dataset
            da.Fill(ds, "w");//数据适配器向ds中装载表depart
            DataTable dt = ds.Tables["w"];//建立一个datatable对象dt,他的实例是da中的表dapart;
            this.gv.DataSource = dt;