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.Configuration;
using System.Data.OleDb;

public partial class Login : System.Web.UI.Page
{
    protected OleDbConnection myconn = new OleDbConnection();

    protected void Page_Load(object sender, EventArgs e)
    {
        // 在此处放置用户代码以初始化页面
        string VNum = "";
        if (Session["CheckCode"] != null)
        {
            VNum = Session["CheckCode"].ToString();

            ViewState["VNum"] = VNum;
            Session["CheckCode"] = null;
        }
    }
    protected void ImageButton1_Click1(object sender, ImageClickEventArgs e)
    {
        myconn.ConnectionString = "Provider=Microsoft.Jet.OleDb.4.0;" + "Data Source=" + Server.MapPath("book/book.mdb");
        myconn.Open();
        string adminsql = "select * from adminbook where admin8='" + TextBox1.Text.Replace("'", "''") + "' and pass8='" + TextBox2.Text.Replace("'", "''") + "' ";
        OleDbCommand Comm = new OleDbCommand(adminsql, myconn);
        OleDbDataReader dr = Comm.ExecuteReader();
        if (dr.Read())
            if (Request["TextBox3"] == ViewState["VNum"].ToString())
            {
                Session["admin"] = TextBox1;
                Session["pass"] = TextBox2;
                Response.Redirect("Reply.aspx");
            }
            else
            {
                TextBox1.Text = "";
                TextBox2.Text = "";
                Response.Write("<script>alert('验证码错误')</script>");
            }
        else
        {
            TextBox1.Text = "";
            TextBox2.Text = "";
            Response.Write("<script>alert('管理员名称或密码错误')</script>");
        }

        {
            dr.Close();
            myconn.Close();
        }

    }
}