using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        var sb = new StringBuilder();

        sb.Append("Hello, we will now count to 100: ");

​

        for (var i = 1; i <= 100; i++)

        {

            sb.AppendFormat("{0}... ", i);

        }

​

        var resultString = sb.ToString();

​

        Console.WriteLine(resultString);

    }

}