ShellMe.CommandLine.CommandHandling.CommandFactory.LoadCommandsFromDirectory C# (CSharp) Method

        private IEnumerable<CommandMetaData> LoadCommandsFromDirectory(DirectoryInfo directory)
        {
            AppDomain domain = null;
            var commands = new List<CommandMetaData>();
            foreach (var file in directory.EnumerateFiles("*.dll", SearchOption.TopDirectoryOnly))
            {
                try
                {
                    var assembly = Assembly.LoadFrom(file.FullName);

                    foreach (var type in assembly.GetExportedTypes())
                    {
                        if (type.GetInterface("ShellMe.CommandLine.CommandHandling.ICommand") != null && !type.IsAbstract)
                        {
                            if (domain == null)
                            {
                                var domainSetup = new AppDomainSetup()
                                                      {
                                                          ApplicationBase = directory.FullName
                                                      };
                                domain = AppDomain.CreateDomain("Sandbox Domain", null, domainSetup);
                            }

                            var assemblyName = assembly.FullName;
                            var typeName = type.FullName;

                            var metaData = new CommandMetaData()
                            {
                                Domain = domain,
                                AssemblyName = assemblyName,
                                TypeName = typeName
                            };

                            var command = CreateCommand(metaData);
                            metaData.Command = command;

                            commands.Add(metaData);
                        }
                    }
                }
                catch (Exception e)
                {
                    // Ignore DLLs that are not .NET assemblies.
                }
            }
            return commands;
        }