Mit andet form program

using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

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

        private void btnKnap_Click(object sender, EventArgs e)
        {
            MessageBox.Show(txtBoks1.Text, txtBoks2.Text, MessageBoxButtons.YesNoCancel, MessageBoxIcon.Error);
        }
    }
}