Constructing a Sorted List with priority items

Question

I have a list of news unsorted items, some of which have a priority flag. I need the priority items to float to the top of the list, and then sort the rest by a date.

So, the end result is a list of news items that has the priority items showing at the top and the remainder sorted by date.

There has to be a better way to do it than this but I'm not sure what the best way would be -

foreach (var newsItem in newsItems)
{
    if (newsItem.isPriority)
    {
        addToPriorityList(newsItem);
    }
    else
    {
        addToOtherList(newsItem);
    }
}

foreach (var priorityItem in priorityList)
{
    addtoMainList(priorityItem);
}

OtherList.SortbyDate();
foreach (var otherItem in otherList)
{
    addtoMainList(otherItem);
}

Is there a more elegant way to pull this off? I assume I could use LINQ but I'm very new to it so I'm not comfortable with the syntax.

Answer 1

You should be able to do:

newsItems.OrderBy(item => item.Priority).ThenBy(item => item.Date);

Answer 2

Try this: (edited according to the suggestion in the 1st comment)

var sorteditems = newsItems.OrderByDescending(item => item.IsPriority)
                           .ThenBy(item => item.Date);