Question

Given the following code:

var people = new List<person>(){ new person { Name = 'John', FamilyName = 'Pendray' },              new person { FamilyName = 'Emery', Name = 'Jake'},              new person { FamilyName = 'Pendray', Name = 'Richard' } };  var q = from p in people                  orderby p.Name                  group p by p.FamilyName into fam                  orderby fam.Key                  select new { fam.Key, members = from p in fam select p }; 

Is it possible to replace the last line with a select that will output a IEnumerable<string> that contains these two strings: ‘Pendray John Richard’ ‘Emery Jake’? Is it possible to project a linq query into strings like this?

Edit: I know this is possible with further code but I’m interested in whether this can be done from within the linq query itself in a similar way to VB being able to project xml out of a query as in http://www.thinqlinq.com/default/Projecting-XML-from-LINQ-to-SQL.aspx (particularly the last code block on this page)

Answer 1

var q = from p in people         orderby p.Name         group p by p.FamilyName into fam         orderby fam.Key         select fam.Key + ' ' + string.Join(' ', (from fm in fam select fm.Name).ToArray()); 

Returns

Emery Jake
Pendray John Richard