Csharp/CSharp Tutorial/Data Type/Currency

Numeric Formatting: Currency ({0:C})

using System;
class MainClass
{
    public static void Main()
    {
        Console.WriteLine("{0:C}", 1234.8977);
        Console.WriteLine("{0:C}", -1234.8977);
    }
}

$1,234.90
-$1,234.90