How to get command line arguments for application in c#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Forms;
 
namespace CrewManagerInterface
{
    public partial class ArgumentApp : System.Windows.Application
    {
        // Indexed command line args using hash table
        public static Hashtable CommandLineArgs = new Hashtable();
 
        void app_Startup(object sender, StartupEventArgs e)
        {
            // Don't bother if no command line args were passed
            // NOTE: e.Args is never null - if no command line args were passed, 
            //       the length of e.Args is 0.
            if (e.Args.Length == 0) return;
 
            // Parse command line args for args in the following format:
            //   /argname:argvalue /argname:argvalue /argname:argvalue ...
            //
            // Note: This sample uses regular expressions to parse the command line arguments.
            // For regular expressions, see:
            // http://msdn.microsoft.com/library/en-us/cpgenref/html/cpconRegularExpressionsLanguageElements.asp
            string pattern = @"(?<argname>/\w+):(?<argvalue>\w+)";
            foreach (string arg in e.Args)
            {
                Match match = Regex.Match(arg, pattern);
 
                // If match not found, command line args are improperly formed.
                if (!match.Success) throw new ArgumentException("The command line arguments are improperly formed. Use /argname:argvalue.");
 
                // Store command line arg and value
                CommandLineArgs[match.Groups["argname"].Value] = match.Groups["argvalue"].Value;
            }
 
        }
    }
}