CalculatorStudio/Form1.cs

using BaseCalculator;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics.Eventing.Reader;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

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

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void button5_Click(object sender, EventArgs e)
        {

        }

        private void button10_Click(object sender, EventArgs e)
        {
            textBox1.Text += "3";
        }

        private void button12_Click(object sender, EventArgs e)
        {
            textBox1.Text += "8";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text += "1";
        }

        private void button9_Click(object sender, EventArgs e)
        {
            textBox1.Text += "2";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox1.Text += "4";
        }

        private void button11_Click(object sender, EventArgs e)
        {
            textBox1.Text += "5";
        }

        private void button14_Click(object sender, EventArgs e)
        {
            textBox1.Text += "6";
        }

        private void button3_Click(object sender, EventArgs e)
        {
            textBox1.Text += "7";
        }

        private void button15_Click(object sender, EventArgs e)
        {
            textBox1.Text += "9";
        }

        private void button13_Click(object sender, EventArgs e)
        {
            textBox1.Text += "0";
        }

        private void button20_Click(object sender, EventArgs e)
        {
            textBox1.Text += "+";
        }

        private void button19_Click(object sender, EventArgs e)
        {
            textBox1.Text += "-";
        }

        private void button18_Click(object sender, EventArgs e)
        {
            textBox1.Text += "*";
        }

        private void button17_Click(object sender, EventArgs e)
        {
            textBox1.Text += "/";
        }

        private void button16_Click(object sender, EventArgs e)
        {
            textBox1.Text += "Mod";
        }

        private void button24_Click(object sender, EventArgs e)
        {
            try
            {
                string expression = textBox1.Text;


                if (expression.Contains("-"))

                {
                    string[] parts = expression.Split('-');
                    if (parts.Length == 2)
                    {
                        long a = long.Parse(parts[0]);
                        long b = long.Parse(parts[1]);

                        int result = CalcClass.Sub(a, b);

                        textBox2.Text = result.ToString();
                    }

                }
                else if (expression.Contains("+"))

                {
                    string[] parts = expression.Split('+');
                    if (parts.Length == 2)
                    {
                        long a = long.Parse(parts[0]);
                        long b = long.Parse(parts[1]);

                        int result = CalcClass.Add(a, b);

                        textBox2.Text = result.ToString();
                    }

                }
                else if (expression.Contains("*"))

                {
                    string[] parts = expression.Split('*');
                    if (parts.Length == 2)
                    {
                        long a = long.Parse(parts[0]);
                        long b = long.Parse(parts[1]);

                        int result = CalcClass.Mult(a, b);

                        textBox2.Text = result.ToString();
                    }

                }
                else if (expression.Contains("/"))

                {
                    string[] parts = expression.Split('/');
                    if (parts.Length == 2)
                    {
                        long a = long.Parse(parts[0]);
                        long b = long.Parse(parts[1]);

                        int result = CalcClass.Div(a, b);

                        textBox2.Text = result.ToString();
                    }

                }
                else if (expression.Contains("Mod"))
                {
                    string[] parts = expression.Split(new string[] { "Mod" }, StringSplitOptions.None);
                    if (parts.Length == 2)
                    {
                        long a = long.Parse(parts[0].Trim());
                        long b = long.Parse(parts[1].Trim());
                        if (b==0)
                        {
                            textBox2.Text = "Ошибка: деление на ноль в операции Mod";
                            return;
                        }
                        int result = CalcClass.Mod(a, b);
                        textBox2.Text = result.ToString();
                    }
                    else
                    {
                        textBox2.Text = "Ошибка: неверный формат выражения для Mod";
                    }
                }

                else
                {
                    textBox2.Text = "Ошибка неверный формат выражения";
                }
            }
            catch (Exception ex)
            {
                textBox2.Text = $"Ошибка: {ex.Message}";
            }
           

        }
    }
}