c# - 将foreach语句重写为linq

Question

我还在学习LINQ，所以请耐心等待:)。我的问题，如何将以下代码转换为LINQ

int count = 0;

foreach (var item in settings.FavouritesSetting)
{
   if (item.FavouriteType != Constants.FavouriteType.Folder)
      count++;
}

return count.ToString();

Answer 1

var count = settings.FavouritesSetting.Count(i => i.FavouriteType != Constants.FavouriteType.Folder);

return count.ToString();

Answer 2

var count = (from item in settings.FavouritesSetting
            where item.FavouriteType != Constants.FavouriteType.Folder
            select item).Count();
return count.ToString();