private void MenuItem1_Click(object sender, RoutedEventArgs e)//Users
        {
            User_Management userManagement = new User_Management();

            userManagement.Show();

            this.Hide();
        }
 private void CloseTheWindow()
 {
     if (whereFrom == "User Management")
     {
         User_Management um = new User_Management();
         um.Show();
     }
     else
     {
         Login login = new Login();
         login.Show();
     }
     this.Hide();
 }