using System;
using System.Globalization;
class NumberFormatInfoSample {
public static void Main() {
NumberFormatInfo nfi = new CultureInfo( "en-US", false ).NumberFormat;
Int64 myInt = -1234;
Console.WriteLine( myInt.ToString( "N", nfi ) );
nfi.NumberDecimalDigits = 4;
Console.WriteLine( myInt.ToString( "N", nfi ) );
}
}
//-1,234.00
//-1,234.0000