สอบถามค่ะ กดปุ่มแล้วต้องการแสดง formอีกอันแต่อยากให้บางส่วนไม่สามารถทำงานได้

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

        private void button1_Click(object sender, EventArgs e)
        {
            new Form2() { _control = "button1" }.Show();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            new Form2() { _control = "button2" }.Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            new Form2() { _control = "button3" }.Show();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            new Form2() { _control = "button4" }.Show();
        }

        private void button5_Click(object sender, EventArgs e)
        {
            new Form2() { _control = "button5" }.Show();
        }
    }

 public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
        public string _control = "";
        private void Form2_Load(object sender, EventArgs e)
        {
            if (_control == "") return;
            if (_control == "button1") button1.Enabled = false;return;
            if (_control == "button2") button2.Enabled = false; return;
            if (_control == "button3") button3.Enabled = false; return;
            if (_control == "button4") button4.Enabled = false; return;
            if (_control == "button5") button5.Enabled = false; return;
        }
    }