form2

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 SYATP2_2
{
    public partial class Form2 : Form
    {
        public Student s { get; set; }
        //public Master m { get; set; }
        public Form2()
        {
            InitializeComponent();
        }

        private void Form2_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            string name = "";
            string lastname = "";
            string faculty = "";
            string diplomaNumber = "";
            if (comboBox1.Text =="Бакалавр")
             s = new Student(name, lastname, faculty);
            else s = new Master(name, lastname,faculty, diplomaNumber);



        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBox1.Text != "Бакалавр" || comboBox1.Text != "Магистр")
            {
                button1.Enabled = false;
            }
             button1.Enabled = true;
        }
    }
}