public void RunNewExamples()
{
IEnumerable <WebPage> webPages = DemoCollections.GetWebPages();
List <PageComponent> allPageComponents = webPages.SelectMany(wps => wps.PageComponents).ToList();
//allPageComponents.ForEach(pc => Console.WriteLine(pc.ToString()));
List <char> chars = webPages.SelectMany(wps => wps.Name).ToList();
//chars.ForEach(c => Console.Write(c));
var uniqueExtensions = webPages.SelectMany(wps => wps.PageComponents
.Select(pc => new { Extension = pc.Extension })).Distinct().OrderBy(n => n.Extension).ToList();
//uniqueExtensions.ForEach(p => Console.WriteLine(p.Extension));
var allPageComponentsWithIndex = webPages.SelectMany
((wps, index) => wps.PageComponents.Select(c => new { ComponentName = c.Name, PositionOfContainer = index })).ToList();
//allPageComponentsWithIndex.ForEach(pc => Console.WriteLine(string.Concat(pc.PositionOfContainer, ": ", pc.ComponentName)));
var pagesWithComponents = webPages
.SelectMany(wps => wps.PageComponents,
(wp, cp) => new { PageName = wp.Name, ComponentName = cp.Name }).ToList();
//pagesWithComponents.ForEach(p => Console.WriteLine(string.Concat(p.PageName, ": ", p.ComponentName)));
var pagesWithComponentsAndIndex = webPages.SelectMany((wps, index) => wps.PageComponents
.Select(c => new { ComponentName = c.Name, PositionOfContainer = index }),
(wp, cp) => new { PageName = wp.Name, ComponentName = cp.ComponentName, PositionOfContainer = cp.PositionOfContainer }).ToList();
pagesWithComponentsAndIndex.ForEach(c => Console.WriteLine(string.Concat("Page: ", c.PageName, ", position: ", c.PositionOfContainer, ", component: ", c.ComponentName)));
}