login.aspx.cs

图书馆里系统实现 jsp servlet bian

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 图书管理.admin
{
	/// <summary>
	/// login 的摘要说明。
	/// </summary>
	public class login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Image Image2;
		protected System.Web.UI.WebControls.Image Image9;
		protected System.Web.UI.WebControls.Image Image6;
		protected System.Web.UI.WebControls.Image Image7;
		protected System.Web.UI.WebControls.Image Image8;
		protected System.Web.UI.WebControls.Image Image18;
		protected System.Web.UI.WebControls.Image Image12;
		protected System.Web.UI.WebControls.Image Image10;
		protected System.Web.UI.WebControls.Image Image11;
		protected System.Web.UI.WebControls.ImageButton ImageButton3;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.ImageButton ImageButton1;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.HyperLink HyperLink2;
		protected System.Web.UI.WebControls.Image Image1;
		data.longin  my_longin= new  图书管理.data.longin();
		static string aa;
		static string name;
		static string password;
		public static string QX;
		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.ImageButton1.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton1_Click);
			this.ImageButton3.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton3_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void ImageButton4_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
		}
		private void Button1_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("index.aspx"); //连接下一个窗体
		}

		private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			name=TextBox1.Text;
			password=TextBox2.Text;
			SqlDataReader dr=my_longin.Longin(name,password); 
			if (dr.Read())
			{
				//QX=dr["用户权限"].ToString();
				//string QX=aa.Substring(2,1);   vb.net 中也可用
				aa=dr["标记"].ToString();
				if (aa=="1")
				{
					Response.Redirect("../frameset/main.aspx");
				}
				else
				{
					Response.Redirect("index.aspx");
				}
			}
			else
			{
				Response.Write("<script>alert('用户名或密码出错 ！！！');</script>");
				TextBox1.Text = "";
			}
		}

		private void ImageButton3_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
		
		}
		public string yjt()
		{
			QX="";
			
			SqlDataReader dr=my_longin.Longin(name,password); 
			if (dr.Read())
			{
				QX=dr["用户权限"].ToString();
			  
			}
		    return QX;
		}
	}
}