private void athleteShowInfoButton_Click(object sender, EventArgs e)
 {
     try
     {
         if (AreAllParamsNotEmpty(
                 athleteLastNameInputTextBox,
                 athleteAmountOfSportEventsInputTextBox,
                 athleteSumOfWonPlacesInputTextBox))
         {
             string lastName            = athleteLastNameInputTextBox.Text;
             int    amountOfSportEvents = Convert.ToInt32(athleteAmountOfSportEventsInputTextBox.Text);
             int    sumOfWonPlaces      = Convert.ToInt32(athleteSumOfWonPlacesInputTextBox.Text);
             if (AreIntParamsValid(amountOfSportEvents, sumOfWonPlaces))
             {
                 Athlete athlete = new Athlete(lastName, amountOfSportEvents, sumOfWonPlaces);
                 athleteOutputRichTextBox.Text = athlete.GetStringInfo();
             }
         }
     }
     catch (Exception exception)
     {
         // ignored
     }
 }