BlueSky.Windows.CustomSettingsWindow.IsValidDirectory C# (CSharp) Метод

        private bool IsValidDirectory(string path)
        {
            if (Directory.Exists(path) || path.Trim().Length == 0)// valid folder or blank if defaults are needed
            {
                return true;
            }
            else
            {
                MessageBox.Show("Path does not exists! " + path);
                return false;
            }
        }