login.aspx.cs

成绩管理系统

using System;
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 tang
{
	/// <summary>
	/// login 的摘要说明。
	/// </summary>
	public class login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.ImageButton ImageButton1;
		protected System.Web.UI.WebControls.ImageButton ImageButton2;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.Label Label6;
		protected System.Web.UI.WebControls.RadioButtonList RadioButtonList1;
		protected System.Web.UI.WebControls.Button Button3;
		protected System.Data.SqlClient.SqlConnection sqlConnection1;
		protected System.Data.SqlClient.SqlCommand sqlCommand1;
		protected System.Data.SqlClient.SqlCommand sqlCommand2;
		protected System.Data.SqlClient.SqlCommand sqlCommand3;
		protected System.Data.SqlClient.SqlCommand sqlCommand4;
		protected System.Web.UI.WebControls.Label Label1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
		}

		#region Web 窗体设计器生成的代码
		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.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
			this.sqlCommand1 = new System.Data.SqlClient.SqlCommand();
			this.sqlCommand2 = new System.Data.SqlClient.SqlCommand();
			this.sqlCommand4 = new System.Data.SqlClient.SqlCommand();
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button3.Click += new System.EventHandler(this.Button3_Click);
			// 
			// sqlConnection1
			// 
			this.sqlConnection1.ConnectionString = "workstation id=\"SUNLIGHT-17F324\";packet size=4096;integrated security=SSPI;data s" +
				"ource=\"SUNLIGHT-17F324\";persist security info=False;initial catalog=大型数据库";
			// 
			// sqlCommand1
			// 
			this.sqlCommand1.CommandText = "SELECT 学生编号, 学生密码 FROM 学生信息";
			this.sqlCommand1.Connection = this.sqlConnection1;
			// 
			// sqlCommand2
			// 
			this.sqlCommand2.CommandText = "SELECT 管理人员编号, 管理人员密码 FROM 实验室管理人员";
			this.sqlCommand2.Connection = this.sqlConnection1;
			// 
			// sqlCommand4
			// 
			this.sqlCommand4.CommandText = "SELECT 授课教师编号, 授课教师密码 FROM 授课教师信息";
			this.sqlCommand4.Connection = this.sqlConnection1;
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button2_Click(object sender, System.EventArgs e)
		{
			System.Data.SqlClient.SqlDataReader sdr;
			sqlConnection1.Open();
			if(RadioButtonList1.SelectedIndex==0)
				sdr=sqlCommand1.ExecuteReader();
			else
			if(RadioButtonList1.SelectedIndex==1)
				sdr=sqlCommand2.ExecuteReader();
			else
				sdr=sqlCommand4.ExecuteReader();
			while(sdr.Read())
			{
				if(TextBox1.Text==sdr.GetValue(0).ToString()&&TextBox2.Text==sdr.GetValue(1).ToString())
				{
					Session["username"]=sdr.GetValue(0).ToString();
					Session["password"]=sdr.GetValue(1).ToString();
					if(RadioButtonList1.SelectedIndex==0)
						Response.Redirect("admin1.aspx");
					else
						if(RadioButtonList1.SelectedIndex==1)
					{
						if(Session["username"].ToString()=="admin1")
							Response.Redirect("guanliyuan.aspx");  
						else
							Response.Redirect("admin2.aspx"); 
					}
					else
						Response.Redirect("admin3.aspx"); 
				}
			}
			if(!sdr.Read())
                Label2.Text="不能验证，请确认帐号密码正确！";
			sdr.Close();
			sqlConnection1.Close();
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("WebForm1.aspx");
		}

		private void Button3_Click(object sender, System.EventArgs e)
		{
		Response.Redirect("jiaoshizhuce.aspx");
		}
		
	}
}