Question

What is a shorthand way to String.Join a non-string array as in the second example?

string[] names = { "Joe", "Roger", "John" };
Console.WriteLine("the names are {0}", String.Join(", ", names)); //ok

decimal[] prices = { 39.99M, 29.99m, 29.99m, 19.99m, 49.99m };
Console.WriteLine("the prices are {0}", String.Join(", ", prices)); //bad overload

Answer 1

If you have LINQ:

decimal[] prices = { 39.99M, 29.99m, 29.99m, 19.99m, 49.99m }; 
Console.WriteLine("the prices are {0}", 
    String.Join(", ", 
       prices.Select(p => p.ToString()).ToArray()
    )
);