This Is A Simple Example Of How To Create Form Authentication In Asp.net.
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1.Default.aspx.cs file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public bool check()
{
SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename='C:\Users\Bhavesh\Documents\Visual Studio 2010\WebSites\authentication\App_Data\Database.mdf';Integrated Security=True;User Instance=True");
string select = "select * from login where username=@username and password=@password";
con.Open();
SqlCommand cmd = new SqlCommand(select, con);
cmd.Parameters.Add("@username", TextBox1.Text);
cmd.Parameters.Add("@password", TextBox2.Text);
Object obj = cmd.ExecuteScalar();
con.Close();
if (obj != null)
{
return true;
}
else
{
return false;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
if (check())
{
Response.Write("<script>alert('you are authorize user')</script>");
}
else
{
Response.Write("hello");
}
}
}
2 Default.aspx File
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
username:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
password:<asp:TextBox ID="TextBox2" runat="server" TextMode="Password"></asp:TextBox><br />
<asp:Button ID="Button1" runat="server" Text="Login" onclick="Button1_Click"></asp:Button>
</div>
</form>
</body>
</html>
3 Web.config File
<?xml version="1.0"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<appSettings/>
<connectionStrings>
<add name="constring" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename='C:\Users\Bhavesh\Documents\Visual Studio 2010\WebSites\authentication\App_Data\Database.mdf';Integrated Security=True;User Instance=True"/>
</connectionStrings>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
<authentication mode="Forms">
<forms name="login" loginUrl="Default.aspx" timeout="30">
</forms>
</authentication>
</system.web>
</configuration>
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