login.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 login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        string qx = this.qx.Text;
        string yhm = this.yhm.Text;//用户名
        string mm = this.mm.Text;//密码
        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 wheresql = " and yhm='"+yhm+"' and mm='"+mm+"'";

        if (qx == "管理员") {
            string sql = "select * from admin where 1=1"+wheresql;
            DataTable dt = DBHelper.GetDataSet(sql);
            if (dt.Rows.Count > 0)
            {
              

                Session["id"] = dt.Rows[0]["id"].ToString();
                Session["yhm"] = yhm;
                Session["mm"] = mm;
                Session["qx"] = "管理员";
                Response.Redirect("index.htm");
            }
        }
        else if (qx == "普通用户")
        {
            string sql1 = "select * from yonghu where 1=1" + wheresql;
            //Response.Write(sql1);
            DataTable dt1 = DBHelper.GetDataSet(sql1);
            if (dt1.Rows.Count > 0)
            {


                Session["id"] = dt1.Rows[0]["yhid"].ToString();
                Session["yhm"] = yhm;