SW210 Лабораторын ажил 1 - Шийдэл 4

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
  public partial class Form1 : Form
  {
      bool a = true;
    
      public Form1()
      {
          InitializeComponent();
      }

      private void radioButton1_CheckedChanged(object sender, EventArgs e)
      {
          a = true;
      }

      private void radioButton2_CheckedChanged(object sender, EventArgs e)
      {
          a = false;
      }

      private void button1_Click(object sender, EventArgs e)
      {
          try
          {
              double temp = Convert.ToDouble(textBox1.Text);

              if (a == true) temp = temp * 9 / 5 + 32;
              else temp = (temp - 32) * 5 / 9;

              label2.Text = Convert.ToString(temp);
          }
          catch(FormatException ex)
          {
              label2.Text = "Тоо оруулна уу";
          }
      }
  }
}