private async void GetListDirecotry(FtpWebRequest webRequest)
        {
            explorerListBox.Items.Clear();
            explorerListBox.Items.Refresh();
            string direcotry = await DownloadListDirectory(webRequest);

            string[] entities = direcotry.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
            files = new List <FileEntity>();
            for (int i = 0; i < entities.Length; i++)
            {
                FileEntity temp = new FileEntity();
                var        str  = entities[i].Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Last();
                temp.FileName = str.Substring(0, str.Length - 1);
                if (entities[i][0] == 'd')
                {
                    temp.FileType = FileType.Directory;
                }
                else
                {
                    temp.FileType = FileType.File;
                }
                FileEntityUserControll tempControll = new FileEntityUserControll(temp);
                explorerListBox.Items.Add(tempControll);
            }
        }
        private async void ExplorerListBoxMouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            FileEntityUserControll fileUserControll = (FileEntityUserControll)explorerListBox.SelectedItem;
            FileEntity             file             = fileUserControll.file;

            if (file.FileType == FileType.Directory)
            {
                FtpWebRequest tempWebRequest = (FtpWebRequest)WebRequest.Create(address + @"\" + file.FileName);
                tempWebRequest.Method      = WebRequestMethods.Ftp.ListDirectoryDetails;
                tempWebRequest.Credentials = new NetworkCredential(user, password);
                GetListDirecotry(tempWebRequest);
                currentAddress = address + @"\" + file.FileName;
            }
            else
            {
                SaveFileDialog fileDialog = new SaveFileDialog();
                if (fileDialog.ShowDialog() == true)
                {
                    string path = fileDialog.FileName;
                    await DownloadFile(path, file.FileName);
                }
            }
        }