LINQ сортировка по динамическим параметрам

Прошу помощи в оптимизации LINQ сортировки. Код написанный ниже, был написан по принципу "ну ведь так же работает?". Но он не красив, не гибок, и хотелось бы понять, как можно и можно ли через линкью, в качестве параметра для сортировки, указывать List.
var newItemsReportInfo = new List(); switch (itemsReportInfo[0].SortingTH.Count) { case 0: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; case 1: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; case 2: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(c => c.SortingTH[1], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; case 3: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(c => c.SortingTH[1], new TechDataComparer()) .ThenBy(c => c.SortingTH[2], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; case 4: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(c => c.SortingTH[1], new TechDataComparer()) .ThenBy(c => c.SortingTH[2], new TechDataComparer()) .ThenBy(c => c.SortingTH[3], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; case 5: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(c => c.SortingTH[1], new TechDataComparer()) .ThenBy(c => c.SortingTH[2], new TechDataComparer()) .ThenBy(c => c.SortingTH[3], new TechDataComparer()) .ThenBy(c => c.SortingTH[4], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; case 6: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(c => c.SortingTH[1], new TechDataComparer()) .ThenBy(c => c.SortingTH[2], new TechDataComparer()) .ThenBy(c => c.SortingTH[3], new TechDataComparer()) .ThenBy(c => c.SortingTH[4], new TechDataComparer()) .ThenBy(c => c.SortingTH[5], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; default: newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH[0], new TechDataComparer()) .ThenBy(c => c.SortingTH[1], new TechDataComparer()) .ThenBy(c => c.SortingTH[2], new TechDataComparer()) .ThenBy(c => c.SortingTH[3], new TechDataComparer()) .ThenBy(c => c.SortingTH[4], new TechDataComparer()) .ThenBy(c => c.SortingTH[5], new TechDataComparer()) .ThenBy(c => c.SortingTH[6], new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList(); break; }
Как видно из кода, мы всегда смотрим на размер itemsReportInfo[0].SortingTH и далее уже применяем один из методов сортировки. Хотелось бы заменить этот код, на код вида.
newItemsReportInfo = itemsReportInfo.OrderBy(x => x.FlyerPos) .ThenBy(x => x.SortingTH, new TechDataComparer()) .ThenBy(x => x.Description) .ThenBy(x => x.Flieztext) .ToList();

Ответ

Попробуйте что-то в таком стиле:
var newItemsReportInfo = new List();
var query = itemsReportInfo.OrderBy(x => x.FlyerPos);
for (int i = 0; i < itemsReportInfo[0].SortingTH.Count; i++) { query = query.ThenBy(x => x.SortingTH[i], new TechDataComparer()); }
query = query.ThenBy(x => x.Description); query = query.ThenBy(x => x.Flieztext); newItemsReportInfo = query.ToList();