get property of array as new array c#

Question

Suppose I have a class like the following:

class Book
{
    public int id;
    public string title;
}

And somewhere later I have an array Book[] books and now want an array of the titles string[] titles = {books[0].title, books[1].title, ..., books[n].title}. Is there an easier way than looping over the books array? Something like

string[] titles = books.getProperty(title)

Thanks in advance

p.s.w.g · Accepted Answer · 2019-06-11 16:04:55Z

5

Generally, you would use Linq methods to manipulate collections, for example (Select & ToArray):

var titles = books.Select(x => x.title).ToArray();

However, since this is an array and you an array as a result, you can also use some static methods on the Array type (ConvertAll):

var titles = Array.ConvertAll(books, x => x.title);

answered Jun 11, 2019 at 16:04

p.s.w.g

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