/// <summary>
/// 尝试从指定的 ViewModel 获取值
/// </summary>
/// <param name="source"></param>
/// <param name="continueWith">在获取值之后做的</param>
public GetValueCombinationComposite(ViewModelBase source, Action <T> continueWith) : base(source)
{
Goal = new PredicateInheritViewModel <IViewModelValue <T> >();
ContinueWith = continueWith;
}
/// <inheritdoc />
public NavigateMessage(ViewModelBase source, string key, object parameter = null) : base(source)
{
Parameter = parameter;
Goal = new PredicateInheritViewModel(typeof(IKeyNavigato));
Key = key;
}