login.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class login : System.Web.UI.Page
{
    SqlConnection conn;
    SqlCommand cmd;
    SqlDataReader dr;

    protected void Page_Load(object sender, EventArgs e)
    {
        
    }
    protected void btn_OK_Click(object sender, EventArgs e)
    {
        try
        {
            string Pwd = this.userPwd.Text;
            conn = sqldata.createCon();
            conn.Open();
            if (this.DropDownList1.SelectedValue == "学生")
            {
                string studNo = Convert.ToString(this.userName.Text);
                string commandText = "select * from student where studNo=@studNo and studPwd=@studPwd";
                cmd = new SqlCommand(commandText, conn);
                SqlParameter id1 = new SqlParameter("@studNo", SqlDbType.VarChar, 10);
                SqlParameter id2 = new SqlParameter("@studPwd", SqlDbType.VarChar, 20);
                id1.Value = studNo;
                id2.Value = Pwd;
                cmd.Parameters.Add(id1);
                cmd.Parameters.Add(id2);
                dr = cmd.ExecuteReader();
                if (dr.Read())
                {
                    Session["studNo"] = dr["studNo"].ToString();
                    Session["Sex"] = dr["Sex"].ToString();
                    Session["studPwd"] = dr["studPwd"].ToString();
                    Session["studName"] = dr["studName"].ToString();
                    Session["shenfen"] = dr["shenfen"].ToString();
                    Session["homeID"] = dr["homeID"].ToString();
                    Session["birthday"] = dr["birthday"].ToString();
                    Session["enterDate"] = dr["enterDate"].ToString();
                    Session["classID"] = dr["classID"].ToString();

                    Response.Write("<script>location.href='studqt.aspx';</script>");
                }
                else
                {
                    Response.Write("<script>alert('用户名或密码错误！');</script>");
                }
            }