private void Login(object sender, EventArgs e)
 {
     if (username.Text.Length == 0)
     {
         MessageBox.Show("Enter Username ");
     }
     else if (password.Text.Length == 0)
     {
         MessageBox.Show("Enter passowrd ");
     }
     else
     {
         List <LoginInfo> log = new List <LoginInfo>();
         DataBase         ds  = new DataBase();
         log = ds.SelectLoginInfo();
         bool ok = false;
         for (int i = 0; i < log.Count(); i++)
         {
             if (username.Text == log[i].username && password.Text == log[i].password)
             {
                 if (log[i].role == "manager")
                 {
                     Manager_Homepage m = new Manager_Homepage(log[i].username);
                     m.Show();
                     this.Hide();
                     ok = true;
                     break;
                 }
                 else   // recptionist
                 {
                     Receptionist_Homepage h = new Receptionist_Homepage(log[i].username);
                     h.Show();
                     this.Hide();
                     ok = true;
                     break;
                 }
             }
         }
         if (ok == false)
         {
             MessageBox.Show("Username and passowrd not Correct ");
         }
     }
 }
 public Receptionist(Receptionist_Homepage fo)
 {
     fo1 = fo;
     //data.getrooms();
     //data.getRooms();
 }