async void navigateToMainPage(object sender, System.EventArgs e)
{
List <User> allUsers = await service.GetAllUsers();
bool userFound = false;
foreach (User user in allUsers)
{
if (username.Text == user.username && password.Text == user.password)
{
Console.WriteLine("Found User");
User loggedUser = user;
userFound = true;
await Navigation.PushAsync(new MainPage(loggedUser.id));
break;
}
}
if (!userFound)
{
await DisplayAlert("Invalid Credentials", "Please enter valid credentials", "OK");
}
}