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Ajax + asp.net implement user login, ajaxasp.net

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Author: User
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Ajax + asp.net implement user login, ajaxasp.net

Using user logon as an example to practice ajax usage

Login.html

Success <! DOCTYPE html> 

DAL. cs


using System;using System.Collections.Generic;using System.Data;using System.Data.SqlClient;using System.Linq;using System.Web; namespace AJAXtest{  public class DAL  {    private string connstr = "server=acer-pc;database=mydatabase;user id=sa;password=123456";    public DataTable selectDB(string sql)    {      DataTable dt = new DataTable();      try      {        SqlConnection conn = new SqlConnection(connstr);        SqlDataAdapter sda = new SqlDataAdapter(sql, conn);        sda.Fill(dt);      }      catch(Exception e)      {}      return dt;    }  }}


BLL. cs


using System;using System.Collections.Generic;using System.Data;using System.Linq;using System.Web; namespace AJAXtest{  public class BLL  {    public bool login(string username,string password)    {      try      {        string sql = "select password from Users where username='" + username + "'";        DAL sqlSelect = new DAL();        DataTable dt = sqlSelect.selectDB(sql);        if (dt.Rows[0]["password"].ToString() != password)          return false;      }      catch (Exception)      {       }      return true;    }  }}


Server. aspx. cs


Using System; using System. collections. generic; using System. linq; using System. web; using System. web. UI; using System. web. UI. webControls; namespace AJAXtest {public partial class Server: System. web. UI. page {protected void Page_Load (object sender, EventArgs e) {string username = Request ["username"]. toString (); string password = Request ["password"]. toString (); BLL B = new BLL (); if (B. login (username, password) {Response. write ("Logon successful"); Response. end ();} else {Response. write ("Logon Failed"); Response. end ();}}}}


Server. aspx


<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Server.aspx.cs" Inherits="AJAXtest.Server" %> <!DOCTYPE html> 

 


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