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class ListItemDataEventArgs : EventArgs
{
	public ushort Index;
	public string Data;
	ListDataEventArgs(int index, string data)
	{
		Index = Convert.ToUInt16(index + 1); //from 0 based index, to 1 based index in SIMPL+
		Data = data;
	}
	ListItemDataEventArgs()
	{
		//simpl+ compliance
	}
}

class ListWrapper
{
	List DataHolder;
	
	public EventHandler OnListItemChange;

	UpdateSimpl()
	{
		for(int i = 0; i< DataHolder.Count; i++)
		{
			OnListItemChange.Invoke(this, new ListDataEventArgs(i,DataHolder[i]));
		}
	}
	
	FetchData()
	{
		...
		UpdateSimpl();
	}
}



/ SIMPL+ Side */
#DEFINE_CONSTANT MAX_ITEMS 32
STRING_OUTPUT
	data[MAX_ITEMS];
	
ListWrapper myData; //tie to C# class
 
//Event handler for the myData.OnListItemChange
EventHandler ListItemChangeHandler(ListWrapper caller, ListItemDataEventArgs args)
{
	if (args.Index > 0 && args.Index<= MAX_ITEMS)
		data[args.Index] = args.Data;
}

FUNCTION Main()
{
	RegisterEvent(myData,OnListItemChange,ListItemChangeHandler);
	WaitForInitializationComplete();
}