Ajax+asp.net to achieve User login

This article mainly introduces the implementation of Ajax+asp.net user landing, mainly to practice the use of Ajax methods, the need for small partners under the reference.

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Take user Login As an example to practice the use of Ajax

Login.html

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<! DOCTYPE html>

DAL.cs

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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=1 23456 "; Public DataTable Selectdb (String sql) {DataTable dt = new DataTable (); try {SqlConnection conn = new SqlConnection (Conns TR); SqlDataAdapter SDA = new SqlDataAdapter (SQL, conn); Sda. Fill (DT); catch (Exception e) {} return dt; } } }

BLL.cs

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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 PA ssWOrd from Users where username= ' "+ username +" "; Dal sqlselect = new Dal (); DataTable dt = SQLSELECT.SELECTDB (SQL); if (dt. rows[0]["Password"]. ToString ()!= password) return false; The catch (Exception) {} return true; } } }

Server.aspx.cs

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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 ("Login succeeded"); Response.End (); else {Response.Write ("Login Failed"); Response.End (); } } } }

Server.aspx

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<%@ Page language= "C #" autoeventwireup= "true" codebehind= "Server.aspx.cs" inherits= "Ajaxtest.server"%> <! DOCTYPE html>

The above mentioned is the entire content of this article, I hope you can enjoy.