login.aspx.cs

来自「图书馆的书目查询」· CS 代码 · 共 107 行

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 Library_BS
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class Login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.TextBox TextBox3;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.Button Button3;
		protected System.Web.UI.WebControls.TextBox TextBox1;
	
		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.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)
		{
			string connStr = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];
			SqlConnection myConnection = new SqlConnection(connStr);

			string checkStr = "select count(*) from 读者信息 where (注册名='"+ TextBox1.Text+"')";
			SqlCommand myCommand = new SqlCommand(checkStr, myConnection);
			string checkPwd = "select 密码 from 读者信息 where(注册名='"+ TextBox1.Text+"')";
			SqlCommand myCommand1 = new SqlCommand(checkPwd, myConnection);

			myConnection.Open();
			int flag = (int)myCommand.ExecuteScalar();
			
			if(flag == 0)
			{
				Response.Write("该注册名不存在");
			}
			else
			{
				if(TextBox3.Text != (myCommand1.ExecuteScalar()).ToString())
				{
					Response.Write("密码错误");
				}
				else
				{
					Response.Redirect("LoginOK.aspx?Register="+TextBox1.Text);
				}
			}

			myConnection.Close();
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{

			UserDB userDb = new UserDB();
			int errorCode=0;

			errorCode = userDb.UserRegister(TextBox2.Text);
			if(2 == errorCode) Response.Write("该证号不存在");

			if(1 == errorCode) Response.Write("已注册用户");

			if(0 == errorCode) 
			{
				Response.Redirect("Register.aspx?UserID="+this.TextBox2.Text);
			}
			
		}
	}
}