using System; using System.Globalization; class MainClass{ public static void Main() { NumberFormatInfo nfi = new CultureInfo( "en-US", false ).NumberFormat; Int64 myInt = -1234; Console.WriteLine( myInt.ToString( "C", nfi ) ); nfi.CurrencyDecimalDigits = 4; Console.WriteLine( myInt.ToString( "C", nfi ) ); } }