private void ButtonEncode_Click(object sender, RoutedEventArgs e)
        {
            TextBlockLeftCharsCount.Text = TextBoxLeft.Text.Length.ToString();
            var begin = DateTime.Now;

            TextBoxRight.Text = RLE.Encode(TextBoxLeft.Text);
            var end = DateTime.Now;

            TextBlockRightCharsCount.Text = TextBoxRight.Text.Length.ToString();
            TextBlockTime.Text            = (end - begin).TotalSeconds.ToString();
        }
 private void ButtonDecode_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         TextBlockRightCharsCount.Text = TextBoxRight.Text.Length.ToString();
         var begin = DateTime.Now;
         TextBoxLeft.Text = RLE.Decode(TextBoxRight.Text);
         var end = DateTime.Now;
         TextBlockLeftCharsCount.Text = TextBoxLeft.Text.Length.ToString();
         TextBlockTime.Text           = (end - begin).TotalSeconds.ToString();
     }
     catch (Exception ex)
     { MessageBox.Show("Błąd. Niepoprawna struktura pliku."); }
 }