Multi Culture Support

The parser is culture-aware. The args[] array passed to ParseArguments(...) is a string array, so when the parser loads data into target instance every string undergoes a conversion.

Suppose you define an Option class like:

class Options {
  [Option('v', "value")]
  public double SomeValue { get; set; }
}

If your system use a dot as decimal separator and you type the following command line:

$ app -v 10,4

the parsing process will fail.

If you want that parsing occurs with a particular culture, just set desired CultureInfo in settings instance.

var parser = new CommandLine.Parser(with => with.ParsingCulture = new CultureInfo("it-IT"));

Remarks: CommandLine.Parser.Default is a singleton uses CultureInfo.InvariantCulture.

Using Double.PositiveInfinity

Double infinity ∞ which is represented by the constant Double.PositiveInfinity is not supported in Parser.Default because it uses CultureInfo.InvariantCulture.

To parse the Infinity ∞ , you should use custom parser and set ParsingCulture, like 'en-Us':

var parser = new Parser(with =>
        {          
            //setup culture for parser 'en-US', for example
            with.ParsingCulture = new CultureInfo("en-US"); //modify to use your cultureinfo
        });
var result = parser.ParseArguments<Options>(args);

Example

-e ∞ -m 50 -p -w 0.25

If you want to use Parser.Default, you can use Infinity as a symbol value, e.g.

#-e ∞ -m 50 -p -w 0.25  //∞ not supported in Parser.Default
-e Infinity -m 50 -p -w 0.25  # use Infinity instead of  ∞

Setting CultureInfo in Console application

CultureInfo ci = new CultureInfo("it-IT");
Thread.CurrentThread.CurrentCulture = ci;
Thread.CurrentThread.CurrentUICulture = ci;

See also

• Help Localization