TSP - Vodomer Form 1

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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void новКлиентToolStripMenuItem_Click(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void groupBox1_Enter(object sender, EventArgs e)
        {

        }
        public static int br = 0;
        private void новКлиентToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            br++;
            label5.Text = br.ToString();
        }
        public static double sum;
        void calc()
        {
            double sp, np, p;
            if (textBox1.Text != "" && textBox2.Text != "")
            {
                sp = double.Parse(textBox1.Text);
                np = double.Parse(textBox2.Text);
                p = np - sp;
                label6.Text = p.ToString();
                if (radioButton1.Checked)
                {
                    sum = p * double.Parse(radioButton1.Text);
                    label8.Text = sum.ToString();
                }
                if (radioButton2.Checked)
                {
                    sum = p * double.Parse(radioButton2.Text);
                    label8.Text = sum.ToString();
                }
                if (radioButton3.Checked)
                {
                    sum = p * double.Parse(radioButton3.Text);
                    label8.Text = sum.ToString();
                }
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            br++;
            label5.Text = br.ToString();
            calc();
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            calc();

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            calc();
        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {
            calc();
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            calc();

        }

        private void radioButton3_CheckedChanged(object sender, EventArgs e)
        {
            calc();
        }

        private void заПрограматаToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form2 frm = new Form2();
            frm.Show();
        }
    }
}