private void EvaluateCanMovePrevious()
{
var newCanMovePrevious = Prompts.IndexOf(SelectedPrompt) == 0 ? false : true;
if (newCanMovePrevious != _canMovePrevious)
{
_canMovePrevious = newCanMovePrevious;
MovePrevious.RaiseCanExecuteChanged();
}
}
private void EvaluateCanMoveNext()
{
if (Prompts.Count != 0)
{
var newCanMoveNext = Prompts.IndexOf(SelectedPrompt) == Prompts.Count - 1 ? false : true;
if (newCanMoveNext != _canMoveNext)
{
_canMoveNext = newCanMoveNext;
MoveNext.RaiseCanExecuteChanged();
}
}
}
private void OnMovePrevious()
{
SelectedPrompt = Prompts[Prompts.IndexOf(SelectedPrompt) - 1];
EvaluateCanMovePrevious();
EvaluateCanMoveNext();
}
