/Kronos/Kronos/Default.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data.SqlClient;

using System.Data;

using System.Data.Linq;

using System.Configuration;

using Kronos.CLASSES;



namespace Kronos

{

    public partial class Default : System.Web.UI.Page

    {

  



        protected void Page_Load(object sender, EventArgs e)

        {





            #region ON_START

            //Don't show text on the main page

            login_label.Visible = false;

            #endregion

            

            

        }





        protected void Button2_Click(object sender, EventArgs e)

        {

          

            #region LOGIN

            //conditions for entered data

            if (username_textbox.Text == "" && password_textbox.Text == "")

            {

                login_label.Visible = true;

                login_label.Text = "No Data entered";

            }

            else if (username_textbox.Text == "") { login_label.Visible = true; login_label.Text = "No Username Entered"; }

            else if (password_textbox.Text == "") { login_label.Visible = true; login_label.Text = "No Password Entered"; }



            else

            {

                //start a Model Entity Object

                soen341dBEntities soen341dB_context = new soen341dBEntities();

                //dB table constructor

                registration newuser = new registration();

                string username = username_textbox.Text;

                string password = globalvariables.EncodePassword(password_textbox.Text);

                try

                {

                    //get the retrived_user

                    var retrieved_user = (from person in soen341dB_context.registrations

                                          where person.Password == password

                                          where person.Username == username

                                          select person).FirstOrDefault();



                    //check to see if a record of it exists

                    if (retrieved_user == null) { login_label.Text = "Account Information Incorrect"; login_label.Visible = true; }

                    else

                    {

                        

                        login_label.Visible = true;

                        login_label.Text = "Login Validated";

                        //encrypt url so people cannot change it to get other people's data; 

                        //Query the username to another page by using question mark variable name =

                        Response.Redirect("LoggedIn.aspx?Username=" + Encoder_BASE64(username));

                    }

                }

                catch (Exception error)

                {

                    login_label.Visible=true;

                    login_label.Text = "Database Exception Occured :" + error.ToString();

                }



            }

            #endregion



        }

         #region Encode64

        public static string Encoder_BASE64(string toEncode)

        {

            byte[] toEncodeAsBytes = System.Text.Encoding.Unicode.GetBytes(toEncode);

           return System.Convert.ToBase64String(toEncodeAsBytes);



        }

        #endregion

    }

}