LINQ list to sentence format (insert commas & “and”)

Question

I have a linq query that does something simple like:

var k = people.Select(x=>new{x.ID, x.Name});

I then want a function or linq lambda,

Answer 1

How about this?

var k = people.Select(x=>new{x.ID, x.Name});
var stringified = people
                  .Select(x => string.Format("{0} : {1}", x.ID, x.Name))
                  .ToList();
return string.Join(", ", stringified.Take(stringified.Count-1).ToArray())
       + " and " + stringified.Last();