/// <summary>
/// Get last value
/// </summary>
/// <param name="state"></param>
/// <param name="propertyName"></param>
/// <returns></returns>
public object Last(ElementState state, string propertyName)
{
object value = null;
if (_lastState.ContainsKey(state.Id))
{
var last = _lastState[state.Id];
value = last.Output.Value(propertyName);
}
_lastState[state.Id] = state.Copy();
return(value);
}
public void Add(ElementState state)
{
_values.Add(state.Copy());
Truncate();
}
