How can I flatten out a list that contains another list using LINQ?

Question

I have a List of IJapaneseDictionaryEntry objects which are described below. Inside this are IKanji objects.

public interface IJapaneseDictionaryEntry
{
    int Sequence { get; }
    IEnumerable<IKanji> Kanjis { get; }
    IEnumerable<IReading> Readings { get; }
    IEnumerable<ISense> Senses { get; }
}

Where each object contains a list of IKanji objects

public interface IKanji
{
    string Text { get; }
    IEnumerable<KanjiInformation> Informations { get; }
    IEnumerable<Priority> Priorities { get; }
}

List<IJapaneseDictionaryEntry> entries = dictionary.GetEntries().ToList();

Can someone show me how it's possible to get a list of all the Text values in the Kanjis lists?

In other words if there are two objects in entries and the first has a Kanjis list with three entries and the second a Kanjis list with two entries then what I would like to see is a list containing 5 rows of Kanji.Text Another way to explain it would be that I want to see a single list of every Kanji.Text in entries

Mun · Accepted Answer · 2019-04-04 16:02:18Z

4

You can use the SelectMany method to flatten multiple lists into a single list. In this case, you could do something like this:

var items = dictionary.GetEntries()
                      .SelectMany(x => x.Kanjis)
                      .Select(x => x.Text)

edited Apr 4, 2019 at 16:02

answered Apr 4, 2019 at 15:59

Mun

14.4k12 gold badges62 silver badges83 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How can I flatten out a list that contains another list using LINQ?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related