NuGet.Program.Main C# (CSharp) Method

        public static int Main(string[] args)
        {
            var console = new Common.Console();
            var fileSystem = new PhysicalFileSystem(Directory.GetCurrentDirectory());
            try
            {
                // Remove NuGet.exe.old
                RemoveOldFile(fileSystem);

                // Import Dependencies  
                var p = new Program();
                p.Initialize(fileSystem, console);

                // Add commands to the manager
                foreach (ICommand cmd in p.Commands)
                {
                    p.Manager.RegisterCommand(cmd);
                }

                CommandLineParser parser = new CommandLineParser(p.Manager);

                // Parse the command
                ICommand command = parser.ParseCommandLine(args) ?? p.HelpCommand;

                // Fallback on the help command if we failed to parse a valid command
                if (!ArgumentCountValid(command))
                {
                    // Get the command name and add it to the argument list of the help command
                    string commandName = command.CommandAttribute.CommandName;

                    // Print invalid command then show help
                    console.WriteLine(NuGetResources.InvalidArguments, commandName);

                    p.HelpCommand.ViewHelpForCommand(commandName);
                }
                else
                {
                    command.Execute();
                }
            }
            catch (AggregateException exception)
            {
                if (ExceptionUtility.Unwrap(exception) == exception)
                {
                    // If the AggregateException contains more than one InnerException, it cannot be unwrapped. In which case, simply print out individual error messages
                    var messages = exception.InnerExceptions.Select(ex => ex.Message)
                                                            .Distinct(StringComparer.CurrentCulture);
                    console.WriteError(String.Join("\n", messages));
                }
            }
            catch (Exception e)
            {
                console.WriteError(ExceptionUtility.Unwrap(e).Message);
                return 1;
            }
            return 0;
        }