Question

Is there a custom format specifier that multiply a number per either 1000 or 1000,000? For example, given <some specifier> custom specifier:

double value = 1;
Console.WriteLine(value.ToString("#,##0<somespecifier>", CultureInfo.InvariantCulture));
// Displays 1,000,000 

This will basically be the opposite of
“,,” custom specifier:

double value = 1234567890;
Console.WriteLine(value.ToString("#,##0,,", CultureInfo.InvariantCulture));
// Displays 1,235 

Thanks in advance for any help.

Answer 1

There is not something like that built in but you could easily create an extension method to do just that:

public static class DoubleExtensions
{
    public static string ToMillionString(this double value)
    {
        return (value * 1000000.0).ToString("#,##0", CultureInfo.InvariantCulture);
    }
}

And usage would be as follows:

double value = 1234567890;
Console.WriteLine(value.ToMillionString());