public override void ViewDidLoad()
{
base.ViewDidLoad();
var set = this.CreateBindingSet <AddUserView, AddUserViewModel>();
set.Bind(AddButton).For(v => v.BindClicked()).To(vm => vm.AddUserCommand);
set.Bind(CancelButton).For(v => v.BindClicked()).To(vm => vm.CancelCommand);
set.Bind(UserNameField).To(vm => vm.UserName);
_userNameEditingDidEndOnExitSubscription = UserNameField.WeakSubscribe(nameof(UserNameField.EditingDidEndOnExit), UserNameField_EditingDidEndOnExit);
set.Bind(PasswordField).To(vm => vm.Password);
set.Bind(PasswordField).For(v => v.BindEditingDidEndOnExit()).To(vm => vm.ValidateAndAddCommand);
set.Bind(ValidationLabel).To(vm => vm.ValidationMessage);
set.Apply();
UserNameField.BecomeFirstResponder();
}