Simple NDesk.Options example for c#18.03.20

1.
add Options.cs to your your application
download it from http://www.ndesk.org/archive/ndesk-options/ndesk-options-0.2.1.tar.gz

2.
your main app:

using System;
using NDesk.Options;

namespace ndesk
{
    
  class Test {
    public static void Main (string[] args)
    {
      var show_help = false;
      int port      = 8000;
      string host   = "127.0.0.1";
      
     
      var p = new OptionSet ()
      {  
        { "h=|host=", "Specify the port (default 127.0.0.1)", v => host = v },
        { "p=|port=", "Specify the port (default 8000)", (int v) => port = v },
        { "help",  "show this message and exit", v => show_help = v != null }
      };

try
      {
        p.Parse (args);
      }
      catch (OptionException e)
      {
        Console.Write ("bundling: ");
        Console.WriteLine (e.Message);
        Console.WriteLine ("Try `greet --help' for more information.");
        return;
      }

if (show_help)
      {
        Show_help (p);
        return;
      }
      Console.WriteLine ("Use Host " + host);
      Console.WriteLine ("Use Port " + port);

}
    static void Show_help (OptionSet p)
    {
      Console.WriteLine ("Parameterlist to use:");
      p.WriteOptionDescriptions (Console.Out);
    }
}  
 
    
    
}

http://www.ndesk.org/doc/ndesk-options/NDesk.Options/OptionSet.html#M:NDesk.Options.OptionSet.WriteOptionDescriptions(System.IO.TextWriter)

Anonymous

to put the option logic into a own method, return a dict

using System;
using System.Collections.Generic;
using NDesk.Options;

namespace ndesk
{
    
  static class Test {
    public static void Main (string[] args)
    {
       IDictionary<string, string> options = My_options(args);
       if(options["show_help"] == "1")
       {
         return;  
       }
       Console.WriteLine(options["host"]);
       Console.WriteLine(options["port"]);
    }
    
    static IDictionary<string, string> My_options(string[] args)
    {
      IDictionary<string, string> dict = new Dictionary<string, string>();
     
      var p = new OptionSet ()
      {  
        { "h=|host=", "Specify the port (default 127.0.0.1)", v => dict.Add("host",v) },
        { "p=|port=", "Specify the port (default 8000)", v => dict.Add("port",v) },
        { "help",  "show this message and exit", v => dict.Add("show_help","1") }
      };

try
      {
        p.Parse (args);
        
        if (!dict.ContainsKey("host"))
        {
          dict.Add("host", "127.0.0.1");
        }
      
        if (!dict.ContainsKey("port"))
        {
          dict.Add("port", "8000");
        }
      
        if (!dict.ContainsKey("show_help"))
        {
          dict.Add("show_help", "0");
        }
     
      }
      catch (OptionException e)
      {
        Console.Write ("bundling: ");
        Console.WriteLine (e.Message);
        Console.WriteLine ("Try `greet --help' for more information.");
        dict.Add("show_help", "1");
        return dict;
      }

if (dict["show_help"] == "1")
      {
        Console.WriteLine ("Parameterlist to use:");
        p.WriteOptionDescriptions (Console.Out);
        return dict ;
      }
      
      return dict;
      
    }
  }    
}

18.03.20

https://www.tutorialsteacher.com/csharp/csharp-dictionary

Anonymous

Simple NDesk.Options example for c#18.03.20

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