private void SaveLogBtn(object sender, RoutedEventArgs e)
        {
            SaveFileDialog sf = new SaveFileDialog()
            {
                Filter = "Log File|*.log"
            };

            if (sf.ShowDialog() == true)
            {
                if (Loger != null)
                {
                    Loger.Save(sf.FileName);
                }
            }
        }