login.aspx.cs

一个办公管理系统完整版

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.SqlClient;

namespace OfficeSys
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label label1;
		protected System.Web.UI.WebControls.Label label2;
		protected System.Web.UI.WebControls.TextBox userName;
		protected System.Web.UI.WebControls.TextBox passWord;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
		protected System.Web.UI.WebControls.Label titleMessage;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			Session["id"]=null;
		}

		#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.passWord.TextChanged += new System.EventHandler(this.passWord_TextChanged);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
		   Class.DataProcess  dataProcess=new OfficeSys.Class.DataProcess();
           string userName=this.userName.Text.ToString().Trim( );
		   string passWord=this.passWord.Text.ToString().Trim( );
            
			//构建对用户名 合密码进行查询的SQL语句
			string sqlStr1="select * from  用户信息表  where 用户名='"+userName+"'";
			string sqlStr2="select * from  用户信息表  where 密码='"+passWord+"'";
			//如果用户存在，继续判断密码
			SqlDataReader reader=dataProcess.ExecuteReader(sqlStr1);
			if(reader.Read( ))
			{  
				string name=reader.GetString(0).Trim( );
				reader=dataProcess.ExecuteReader(sqlStr2);
				if(reader.Read( ))
				{ 
					//如果登陆成功，用Session保存用户信息，并自动跳转到index.aspx页面
					Session["id"]=name;
					if (name=="admin")
					{
						Response.Redirect("default.aspx");
					}
					else
					{
						
						Response.Redirect("default1.aspx");
					}
				}
				else
				{
					//密码不正确，显示提示信息
					this.titleMessage.Text="密码不正确，请重新输入密码";
				    this.passWord.Text="";
				}
				
			}
				//如果用户不存在，重新输入用户名
			else
			{
				
				this.titleMessage.Text="没有这个用户，请重新输入";
				this.userName.Text="";
				this.userName.Text="";
				
			}
			reader.Close( );
           
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			this.userName.Text="";
			this.passWord.Text="";
		}

		private void passWord_TextChanged(object sender, System.EventArgs e)
		{
		
		}
	}
}