Listing10-5.txt

SmartDispatcher.BeginInvoke(() =>
    {
        List<PieChartFileType> fileTypes = new List<PieChartFileType>();

        var groups =
	        from item in items.ToArray()
	        group item by (string)item["File_x0020_Type"];

        foreach (var group in groups)
        {
            fileTypes.Add(new PieChartFileType(group.Key, group.Count()));
        }

        if (onSuccess != null)
        {
            onSuccess(fileTypes);
        }
    }
);