Join collection of objects into comma-separated string

Question

In many places in our code we have collections of objects, from which we need to create a comma-separated list. The type of collection varies: it may be a DataTable from whi

Answer 1

I love Matt Howells answer in this post:

I had to make it into an extension:

public static string ToCsv(this IEnumerable things, Func toStringMethod)

Usage: [ I am getting all the emails and turning them into a csv string for emails ]:

var list = Session.Find("from User u where u.IsActive = true").Cast();

return list.ToCsv(i => i.Email);