C# 0 The Complete Reference

PART II

C h a p t e r   2 2 :  

S t r i n g s   a n d   F o r m a t t i n g    

671

exist. The reason is efficiency; passing up to four arguments is more efficient than using a 

variable-length argument list.

The following program demonstrates the variable-length argument version of 

Concat( )

:

// Demonstrate Concat().

using System;

class ConcatDemo {

  static void Main() {

    string result = String.Concat("This ", "is ", "a ",

                                  "test ", "of ", "the ",

                                  "String ", "class.");

    Console.WriteLine("result: " + result);

  }

}

The output is shown here:

result: This is a test of the String class.

There are also versions of the