private void btStart_Click(object sender, EventArgs e)
 {
     try
     {
         if (radioH.Checked == true)
         {
             ComputeHmax(txtPath.Text); //Call the ComputeHmax method if the selected radio button is 'maximum depth'
         }
         else
         {
             ComputeVmax(txtPath.Text); //Call the ComputeVmax method if the selected radio button is 'maximum speed'
         }
     }
     catch (FileNotFoundException FEX)
     {
         MessageBox.Show(FEX.Message, FEX.GetType().Name); //Report a 'File Not Found' error, if any
     }
     catch (Exception EX)
     {
         MessageBox.Show(EX.Message, EX.GetType().Name); //Report other errors, if any
     }
 }