Efficient way to convert Array to String using C#

Here is way to convert a given char array into string. Just pass the array into string constructor and it will automatically convert into string.

using System;

namespace MyApp
{
    class array_to_string_class
    {
        static void Main()
        {
            char[] array_var = new char[16];
            array_var[0] = 'S';
            array_var[1] = 'o';
            array_var[2] = 'f';
            array_var[3] = 't';
            array_var[4] = 'w';
            array_var[5] = 'a';
            array_var[6] = 'r';
            array_var[7] = 'e';
            array_var[8] = ' ';
            array_var[9] = 'T';
            array_var[10] = 'e';
            array_var[11] = 's';
            array_var[12] = 't';
            array_var[13] = 'i';
            array_var[14] = 'n';
            array_var[15] = 'g';

            string str = new string(array_var);
            Console.WriteLine(str);

            Console.Read();
        }
    }
}