yonghu/yonghu.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 yonghu_yonghu : System.Web.UI.Page
{
    string id = "";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["id"] != null)
        {
            id = Session["id"].ToString();
        }
        if (!IsPostBack)
        {

            string sql = "select * from yonghu where yhid='" + id + "'";
            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.dh.Text = dt.Rows[0]["dh"].ToString();
                this.dz.Text = dt.Rows[0]["dz"].ToString();
            }
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string yhm = this.yhm.Text;
        string mm = this.mm.Text;
        string dh = this.dh.Text;
        string dz = this.dz.Text;
        if (yhm.Length == 0)
        {
            MessageBox.Show(this.Page, "用户名名不能为空");
            return;
        }
        if (mm.Length == 0)
        {
            MessageBox.Show(this.Page, "密码不能为空");
        }
        string sql = "update yonghu set yhm='" + yhm + "',mm='" + mm + "',dh='" + dh + "',dz='" + dz + "' where yhid='" + id + "'";
        int row = 0;
        try
        {
            row = DBHelper.ExecuteCommand(sql);
        }
        catch (Exception ex)
        {