index.aspx.cs

这是一个学生服务管理系统

using System;
using System.Data.OleDb;
using System.Collections;
using System.ComponentModel;
using System.Data;
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 sheng
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Image Image1;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.Button btnLogin;
		protected System.Web.UI.WebControls.TextBox txtPassword;
		protected System.Web.UI.WebControls.Label labMessage;
		protected System.Web.UI.WebControls.TextBox txtName;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(Session["name"]!=null)
				Session["name"]=null;
			if(Request["message"]!=null)
			{
				labMessage.Text=Request["message"].ToString();
				labMessage.Visible=true;
			}

	}

		#region Web 窗体设
		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.btnLogin.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{   
			OleDbConnection Conn = new OleDbConnection();//建立一个初始的数据库链接 conn
			//对conn进行初始化
			Conn.ConnectionString = " provider = microsoft.jet.oledb.4.0; data source=" + Server.MapPath("access/sheng.mdb");
			//建立一个初始命令对象
			OleDbCommand Comm = new OleDbCommand();
			//初始化 comm命令对象
			Comm.CommandText = "select 部门,级别 from person where 用户名='" + txtName.Text.Trim() + "' and 密码='" + txtPassword.Text.Trim() + "'";
			Comm.Connection = Conn;
			//打开数据库链接
			Conn.Open();

			
			int count=0;
			//建立一个初始的数据库阅读器
			OleDbDataReader dr = Comm.ExecuteReader();
			
			if( dr.Read())
			{				
				Session["Name"] = txtName.Text.Trim();
				Session["department"] = dr[0].ToString();
				Session["level"]= dr[1].ToString();
				dr.Close();
				Conn.Close();	
			}
			else
				Response.Redirect("index.aspx?message=登录失败");
			
			
			Response.Redirect("frame.aspx");
		

		}
	}
}