login page using Mysql database

Posted by Satyapriyanayak under ASP.NET category on | Points: 40 | Views : 2677
In this Code Snippet we will know how to do a login page using Mysql database.

Downloaded and installed the MySQL Connector/Net from the MySQL official website

Open Visual Studio and click on the new project and give the project a name; it will open the new project, then click on the solution explorer (F4); right-click on "Reference" to add a new reference into the project. Add a reference for those two .dll files to the project (MySql.dll (Win apps), MySql.web.dll (Web apps)).

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Mysql_login_page._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<form id="form1" runat="server">
<asp:Label ID="lb1" runat="server" Font-Bold="True" ForeColor="#FF3300"></asp:Label><br />
<asp:Label ID="Label1" runat="server" Text="Name" Font-Bold="True"
Width="100px" BackColor="#FFFF66" ForeColor="#FF3300"></asp:Label>
<asp:TextBox ID="TextBox_user_name" runat="server" ForeColor="#993300" Width="100px"></asp:TextBox><br />
<asp:Label ID="Label2" runat="server" Text="Password" Font-Bold="True"
Width="100px" BackColor="#FFFF66" ForeColor="#FF3300"></asp:Label>
<asp:TextBox ID="TextBox_password" runat="server" ForeColor="#CC6600"
TextMode="Password" Width="100px"></asp:TextBox><br />
<asp:Button ID="btn_login" runat="server" Text="Login" Font-Bold="True"
BackColor="#CCFF99" onclick="btn_login_Click" /><br />

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using MySql.Data.MySqlClient;
namespace Mysql_login_page
public partial class _Default : System.Web.UI.Page
string strcon = "Server=localhost;Database=test;Uid=root;Pwd=;";
string str;
MySqlCommand com ;
object obj;

protected void btn_login_Click(object sender, EventArgs e)
MySqlConnection con = new MySqlConnection(strcon);
str = "select count(*) from login where UserName=@UserName and Password =@Password";
com = new MySqlCommand(str, con);
com.CommandType = CommandType.Text;
com.Parameters.AddWithValue("@UserName", TextBox_user_name.Text);
com.Parameters.AddWithValue("@Password", TextBox_password.Text);
obj = com.ExecuteScalar();
if (Convert.ToInt32(obj) != 0)
lb1.Text = "invalid user name and password";

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