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 Button1_Click(object sender, EventArgs e)
    {
        string yhm = this.yhm.Text;
        string mm = this.mm.Text;
        string qx = this.qx.Text;
        int row = 0;
        if (yhm.Length == 0 || mm.Length == 0)
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('用户名和密码不能为空！');</script>");
            return;
        }
        string sql = "";
        if (qx == "患者")
        {
            sql = "select * from huanzhe where yhm='" + yhm + "' and mm='" + mm + "'";
        }
        if (qx == "医生")
        {
            sql = "select * from yisheng where yhm='" + yhm + "' and mm='" + mm + "'";
        }
        if (qx == "管理员")
        {
            sql = "select * from gly where yhm='" + yhm + "' and mm='" + mm + "'";
        }
        DataTable dt = DBHelper.GetDataSet(sql);
        if (dt.Rows.Count > 0)
        {
            //是在线用户
            Session["yhm"] = yhm; //保存用户ID
            Session["mm"] = mm; //保存用户登录名
       Session["qx"] = qx;  //保存用户权限

       if (qx == "患者")
       {
           Session["id"] = dt.Rows[0]["hzid"].ToString();  //保存用户登录名
       }
       if (qx == "医生")
       {
           Session["id"] = dt.Rows[0]["ysid"].ToString();  //保存用户登录名
       }
       if (qx == "管理员")