public SignupPage() { signupViewModel = new SignupViewModel(); InitializeComponent(); Name.Completed += (object sender, EventArgs e) => { CPF.Focus(); }; CPF.Completed += (object sender, EventArgs e) => { Birthday.Focus(); }; Birthday.Completed += (object sender, EventArgs e) => { Password.Focus(); }; Password.Completed += (object sender, EventArgs e) => { signupViewModel.SignupCommand.Execute(null); }; BindingContext = signupViewModel; }