Custom Authentication provider by implementing IHttpModule, IPrincipal and IIdentity

using System;
using System.Web;
using System.Web.UI;
using System.Collections;

using CustomSecurity;
namespace CustomAuthenticationDemo
{
	/// <summary>
	/// Summary description for Login.
	/// </summary>
	public class Login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox username;
		protected System.Web.UI.WebControls.TextBox password;
		protected System.Web.UI.WebControls.Button Button1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// Put user code to initialize the page here
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			//Write your own Authentication logic here
			if(this.username.Text != "" && this.password.Text !="")
			{
				//Write your own code to get the User Roles 
				ArrayList roles = new ArrayList();
				roles.Add("Manager");
				if(this.username.Text == "superuser")
					roles.Add("Administrator");
			
				roles.Add("ITUser");
				
				//Convert roles into pipe "|" separated string
				System.Text.StringBuilder strRoles = new System.Text.StringBuilder();
				foreach(string role in roles)
				{
					strRoles.Append(role);
					strRoles.Append("|");
				}

				CustomIdentity userIdentity = new CustomIdentity(this.username.Text, 1, true, 
					true, this.username.Text, "someuser@some.com", strRoles.ToString());

				CustomPrincipal principal = new CustomPrincipal(userIdentity, roles);
				Context.User = principal;
				//string estr = CustomAuthentication.Encrypt(userIdentity);
				CustomAuthentication.RedirectFromLoginPage(userIdentity);
			}
		}
	}
}