using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace Aspnet
{
    
    
        
        
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {    
            this.BT_submit.Click += new System.EventHandler(this.BT_submit_Click);
            this.BT_cancel.Click += new System.EventHandler(this.BT_cancel_Click);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        private void BT_cancel_Click(object sender, System.EventArgs e)
        {
            Response.Redirect("Index.aspx");
        }

        private void BT_submit_Click(object sender, System.EventArgs e)
        {
            string selectstr;
            OleDbConnection Conn=new OleDbConnection
                (@"provider=Microsoft.jet.oledb.4.0;data source=e:\Lgt\asp\Aspnet.mdb;");
            if(RBL_type.SelectedItem.Value.ToString()=="普通用户")
            {
                selectstr="select count(*) from UserInfo where UserName like '"+TB_name.Text+"'and Pwd like '"+TB_pwd.Text+"'";}
            else 
            {
                 selectstr="select count(*) from AdminInfo where AdminID like '"+TB_name.Text+"'and AdminPwd like '"+TB_pwd.Text+"'";
                                                       }
            Session["type"]=RBL_type.SelectedItem.Value.ToString();
            OleDbCommand mycommand=new OleDbCommand(selectstr,Conn);
            Conn.Open();
            int flag=(int)mycommand.ExecuteScalar();
            Conn.Close();
            if(flag>0)
            {
                Session["UserName"]=TB_name.Text;
                Response.Redirect("ViewMessage.aspx");
            }
            else
            {
                Label1.Text="对不起，用户名和密码不符，请重新输入!";
                TB_name.Text="";
                TB_pwd.Text="";
            }
        }
    }
}




执行以上代码时会出现这样的提示::
  无法找到脚本库"/aspnet_client/system_web/1_1_4322/\\\\\\\\\WebUIValidation
.js".请尝试手动放置此文件,或通过运行"asnet_regiss-c"重新安装.

但程序仍可运行!!!