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Formatting numbers

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    Formatting numbers

    Applies to NinjaTrader 8 and NinjaTrader 7

    String formatting on numbers is very useful for creating readable output. This can be done through the use of the number object’s ToString() method.

    A common practice is printing out mathematical operations with the use of the ToString() method on the double object. What usually happens is the printing of a long string containing all the decimal places existing in the double. This sometimes makes output cluttered and hard to read. Luckily, C# has a robust set of string formatting options available to make the string more comprehendible.

    Here is a list of common formatting options available in the ToString() method:
    Code:
    double c = 10.25693;
    Print("No formatting: " + c.ToString());
    Print("Currency formatting: " + c.ToString("C"));
    Print("Exponential formatting: " + c.ToString("E"));
    Print("Fixed-point formatting: " + c.ToString("F2"));
    Print("General formatting: " + c.ToString("G"));
    Print("Percent formatting: " + c.ToString("P0"));
    Print("Formatted to 2 decimal places: " + c.ToString("N2"));
    Print("Formatted to 3 decimal places: " + c.ToString("N3"));
    Print("Formatted to 4 decimal places: " + c.ToString("N4"));
    The corresponding output is as follows:
    Code:
    No formatting: 10.25693
    Currency formatting: $10.26
    Exponential formatting: 1.025693E+001
    Fixed-point formatting: 10.26
    General formatting: 10.25693
    Percent formatting: 1,026 %
    Formatted to 2 decimal places: 10.26
    Formatted to 3 decimal places: 10.257
    Formatted to 4 decimal places: 10.2569
    For custom formatting you can use the following:
    Code:
    double phoneNumber = 9162031022;
    Print("Phone number: " + phoneNumber.ToString("(###) ### - ####"));
    Corresponding output:
    Code:
    Phone number: (916) 203 - 1022
    For more information on general string formatting this guide may be of use. Many other resources can be found online through a google search as well.
    http://radio.weblogs.com/0106479/sto...attingInC.html
    Last edited by NinjaTrader_Jesse; 06-03-2015, 12:43 PM.
    Josh P.NinjaTrader Customer Service

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