prwork_7/Calculation.cs

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 WindowsFormsСигаева2ИС_ПР2
{
    /// <summary>
    /// Класс Calculation для вычисления выражения
    /// </summary>
    public partial class Calculation : Form
    {
        /// <summary>
        /// Конструктор
        /// </summary>
        public Calculation()
        {
            InitializeComponent();
        }
        /// <summary>
        /// Кнопка для вычисления выражения 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ButtonCalculation_Click(object sender, EventArgs e)
        {
            if 
                (double.TryParse(textBoxA.Text, out double a) && 
                double.TryParse(textBoxX.Text, out double x) &&
                double.TryParse(textBoxC.Text, out double c) &&
                double.TryParse(textBoxD.Text, out double d))
                {
                   double f = Math.Sqrt((c - d) * (Math.Pow(x, 2))) / x;
                   double q = Math.Log((Math.Pow(x, 2)) + c) / ((0.7 * x) + (a*d));
                   double n = (Math.Pow(10, -2)) / (c - (d * Math.Pow(x, 3)));
                   double result = f + q + n;
                   textBoxResult.Text += Environment.NewLine + result.ToString();
                    
                }
             
        }

    }
}