Logout & Re-Login Feature Added

AttendanceSystem/AttendanceSystem/Bootstrap.cs

@@ -0,0 +1,103 @@
+using AttendanceSystem.HomePages;
+using AttendanceSystem.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AttendanceSystem
+{
+    public class Bootstrap
+    {
+        private static readonly AttendanceSystemDbContext db = new AttendanceSystemDbContext();
+        public static void ApplicationStart()
+        {
+            while (true)
+            {
+                int choice = 0;
+                string userName = "";
+                string password = "";
+
+                Console.Write("Options: ");
+                Console.Write("\n1. Admin Login\n2. Teacher Login\n3. Student Login\nEnter option: ");
+                choice = int.Parse(Console.ReadLine());
+
+                switch (choice)
+                {
+                    case 1:
+                        Console.WriteLine();
+                        Console.Write("\nEnter User Name: ");
+                        userName = Console.ReadLine();
+                        Console.Write("Enter Password: ");
+                        password = Console.ReadLine();
+
+                        if (userName != string.Empty && password != string.Empty)
+                        {
+                            Admin a1 = Bootstrap.db.Admins.Where(x => x.UserName == userName && x.Password == password).FirstOrDefault();
+                            if (a1 != null)
+                                AdminPage.AdminOption(a1);
+                            else
+                                Console.WriteLine("Wrong Username and Password");
+                        }
+                        else
+                        {
+                            Console.WriteLine("Input can not be empty. Please enter a valid Username & Password");
+                        }
+
+                        break;
+
+                    case 2:
+                        Console.WriteLine();
+                        Console.Write("\nEnter User Name: ");
+                        userName = Console.ReadLine();
+                        Console.Write("Enter Password: ");
+                        password = Console.ReadLine();
+
+                        if (userName != string.Empty && password != string.Empty)
+                        {
+                            Teacher a1 = Bootstrap.db.Teachers.Where(x => x.UserName == userName && x.Password == password).FirstOrDefault();
+                            if (a1 != null)
+                                TeacherPage.TeacherOption(a1);
+                            else
+                                Console.WriteLine("Wrong Username and Password");
+                        }
+                        else
+                        {
+                            Console.WriteLine("Input can not be empty. Please enter a valid Username & Password");
+                        }
+
+                        break;
+
+                    case 3:
+                        Console.WriteLine();
+                        Console.Write("\nEnter User Name: ");
+                        userName = Console.ReadLine();
+                        Console.Write("Enter Password: ");
+                        password = Console.ReadLine();
+
+                        if (userName != string.Empty && password != string.Empty)
+                        {
+                            Student s1 = Bootstrap.db.Students.Where(x => x.UserName == userName && x.Password == password).FirstOrDefault();
+                            if (s1 != null)
+                                StudentPage.StudentOption(s1);
+                            else
+                                Console.WriteLine("Wrong Username and Password");
+                        }
+                        else
+                        {
+                            Console.WriteLine("Input can not be empty. Please enter a valid Username & Password");
+                        }
+
+                        break;
+
+                    default:
+                        Console.WriteLine("Invalid Input!!");
+                        Console.WriteLine();
+                        break;
+                }
+            }
+
+        }
+    }
+}