Login using XML file in ASP.NET using C#

In this article we will introduce with Login using XML file in ASP.NET using C#.

Login using XML file in ASP.NET using C#

In this Example we will introduce how can we use login control and provide data using XML file. First you will make the XML file which is following:

Loginxml.xml

<?xml version="1.0" encoding="utf-8" ?>
<employee>
<User>
<username>bikrantsingh</username>
<password>bikrant123</password>
</User>
<User>
<username>anuragsingh</username>
<password>anurag</password>
</User>
<User>
<username>saurabh</username>
<password>saurabh123</password>
</User>
</employee>

LoginXML.aspx (Design Page):

LoginXML.aspx (source code):

<%@ Page Title="" Language="C#" MasterPageFile="~/RoseindiaMaster.master" AutoEventWireup="true"
CodeFile="LoginXML.aspx.cs" Inherits="LoginXML" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<div>
<h2 style="color: Green">
Login using Xml file in ASP.NET 4, C#</h2>
<asp:Login ID="Login1" runat="server" BackColor="#F7F7DE" BorderColor="#CCCC99" BorderStyle="Solid"
BorderWidth="1px" Font-Names="Verdana" Font-Size="10pt" Height="166px" OnAuthenticate="Login1_Authenticate"
Width="264px" FailureText="Username ans password did not match!">
<TitleTextStyle BackColor="#6B696B" Font-Bold="True" ForeColor="#FFFFFF" />
</asp:Login>
</div>
</asp:Content>

LoginXML.aspx.cs (C# code file):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
public partial class LoginXML : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
{
string username;
string pwd;
string CurrentUser = "";
string CurrentPwd = "";
bool LoginStatus = false;
username = Login1.UserName;
pwd = Login1.Password;
XmlDocument xmxdoc = new XmlDocument();
xmxdoc.Load(Server.MapPath("~/App_Data/Loginxml.xml"));
XmlNodeList xmlnodelist = xmxdoc.GetElementsByTagName("User");
foreach (XmlNode xn in xmlnodelist)
{
XmlNodeList xmlnl = xn.ChildNodes;
foreach (XmlNode xmln in xmlnl)
{
if (xmln.Name == "username")
{
if (xmln.InnerText == username)
{
CurrentUser = username;
}
}
if (xmln.Name == "password")
{
if (xmln.InnerText == pwd)
{
CurrentPwd = pwd;
}
}
}
if ((CurrentUser != "") & (CurrentPwd != ""))
{
LoginStatus = true;
}
}
if (LoginStatus == true)
{
Session["UserAuthentication"] = username;
Session.Timeout = 1;
Response.Redirect("Default2.aspx");
}
else
{
Session["UserAuthentication"] = "";
}
} 
}

Output:

Run the application and fill username and password and click login button.

When you click on Login button the page will redirect on other web page.