khjl/modify.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using dao;
public partial class khjl_modify : System.Web.UI.Page
{

    string id = "";
    protected void Page_Load(object sender, EventArgs e)
    {
        id = Session["id"].ToString();
        if (!IsPostBack)
        {

            string sql = "select * from khjl where khjlid='" + id + "'";//根据ID 查询表信息
            DataTable dt = DBHelper.GetDataSet(sql);
            if (dt.Rows.Count > 0)
            {
                this.yhm.Text = dt.Rows[0]["yhm"].ToString();
                this.mm.Text = dt.Rows[0]["mm"].ToString();
                this.xm.Text = dt.Rows[0]["xm"].ToString();
                this.lxdz.Text = dt.Rows[0]["lxdz"].ToString();
                this.lxdh.Text = dt.Rows[0]["lxdh"].ToString();



            }
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string yhm = this.yhm.Text;//用户名
        string mm = this.mm.Text;//密码
        string xm = this.xm.Text;//姓名
        string lxdz = this.lxdz.Text;//联系地址
        string lxdh = this.lxdh.Text;//联系电话

        if (yhm.Length == 0)
        {
            MessageBox.Show(this.Page, "用户名不能为空");
            return;
        }

        if (mm.Length == 0)
        {
            MessageBox.Show(this.Page, "密码不能为空");
            return;
        }

        if (xm.Length == 0)
        {