EliaBombarolo/Form1.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 EliaBombarolo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if(int.TryParse(textBox1.Text, out int num1) && int.TryParse(textBox2.Text, out int num2))
            {
                MessageBox.Show($"{textBox1.Text}+{textBox2.Text} FALE {textBox1.Text + textBox2.Text}");
            }
            else
            {
                MessageBox.Show("Inswerire numearo intero valido");
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (int.TryParse(textBox1.Text, out int num1) && int.TryParse(textBox2.Text, out int num2))
            {
                string porcodio = string.Empty;
                for (int i = 0; i < num2; i++)
                {
                    porcodio = porcodio + num1.ToString();
                }
                MessageBox.Show($"OPwRAZZIONE FDARE {porcodio}");
            }
            else
            {
                MessageBox.Show("Inswerire numearo intero valido");
            }
        }
    }
}