admin_login.aspx.cs

如果遇到MD5加密文件(一般都是这个)

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;
using System.Data.OleDb;
namespace Lb_news.admin
{
	/// <summary>
	/// admin_login 的摘要说明。
	/// </summary>
	public class admin_login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequriedField1;
		protected System.Web.UI.WebControls.RegularExpressionValidator Regular1;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequriedField2;
		protected System.Web.UI.WebControls.RegularExpressionValidator Regular2;
		protected System.Web.UI.WebControls.TextBox userName;
		protected System.Web.UI.WebControls.TextBox passWord;
		protected System.Web.UI.WebControls.Button Submit;
		protected Conn ds1=new Conn();
		protected  OleDbDataReader rd;
		protected  DataSet ds;

		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
		}


		private void Check(string t1,string t2)
		{
	
	
			string	UserName=t1;			
			string PassWord=t2;

			ds1.DBopen();

			rd=ds1.ExecuteOleDbDataReader("select * from Lb_Admin  where A_Name='"+UserName+"' and A_Password='"+PassWord+"'");  
		
	

			if(rd.Read()==true)
			{
				int Grade=(int)rd.GetValue(3); 	    
					
				HttpCookie MyCookies;		
				MyCookies=new HttpCookie("UserInfo");
				MyCookies.Values.Add("username",rd.GetString(1).ToString());
				MyCookies.Values.Add("grade",rd["A_Grade"].ToString());
							
				Response.AppendCookie(MyCookies); 
				Response.Write ("<script>top.location.href=('admin_main.htm');</script>");
					
				
			}
			else
			{

					
				ds1.alert("用户名或者密码错误","admin_login.aspx");

			}
	
			rd.Close();
			ds1.DBclose();

		}


		#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.Submit.Click += new System.EventHandler(this.Submit_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Submit_Click(object sender, System.EventArgs e)
		{
			if (Page.IsValid) 
			{
				string username=userName.Text.Trim(); //用户名
				string password=System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(passWord.Text.Trim(), "MD5"); 
	
				Check(username,password);
				
			}
			
		}
	}
}