String.Join非字符串数组的最佳方法是什么？

Question

什么是String.Eoin非字符串数组的简写方法,如第二个示例中所示？

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

如果你有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()
    )
);

Answer 2

Console.WriteLine("the prices are {0}", String.Join(", ", Array.ConvertAll(prices, p => p.ToString()));