Code for reversing a string without using reverse function?

class ReverseString
{
    public static void Main(string[] args)
    {
        string Name = "Welcome to dotnet funda";
        char[] characters = Name.ToCharArray();
        StringBuilder sb = new StringBuilder();
        for (int i = Name.Length - 1; i >= 0; --i)
        {
            sb.Append(characters[i]);
        }
        Console.Write(sb.ToString());
        Console.Read();
    }
}