ConsoleHelpers is a class that contains utility methods for making development of console applications easier.

ConsoleHelpers

using System;
using System.Text;

namespace Konard.Helpers
{
    public static class ConsoleHelpers
    {
        public static string ExtractOptionParameter(string[] args, string optionName, bool parameterIsMandatory)
        {
            int optionIndex = Array.IndexOf(args, "-" + optionName);

            if (optionIndex >= 0)
            {
                StringBuilder sb = new StringBuilder();

                int firstArgIndex = optionIndex + 1;

                for (int i = firstArgIndex; i < args.Length; i++)
                {
                    if (args[i].StartsWith("-"))
                        break;
                    else
                    {
                        if (!string.IsNullOrWhiteSpace(args[i]))
                        {

                            if (i == firstArgIndex)
                                sb.Append(args[i]);
                            else
                            {
                                sb.Append(' ');
                                sb.Append(args[i]);
                            }
                        }
                    }
                }

                string optionParameter = sb.ToString();

                if (parameterIsMandatory && string.IsNullOrWhiteSpace(optionParameter))
                {
                    string error = string.Format("После опции '{0}' должен следовать параметр.", optionName);
                    throw new ArgumentException(error);
                }
                else
                {
                    return optionParameter;
                }
            }
            else
            {
                return String.Empty;
            }
        }
    }
}