如何使用 get set 方法将数据从 class 传递到 Form？

Question

I am a beginner in c#. I have array data in TCP class and it passes to form I tried to Get a Value,but I got 0 value from return the data to form

tcp.cs

public class Tcp
    {
        private int _a;
        public void start()
        {
            int[] i = { 10, 20, 30, 40, 50 };
            a = i[0];
        }
        public int a
        {
            get
            {
                return _a;
            }
            set
            {
                _a = value;
            }
        }
    }

Form.cs

    private void button1_Click(object sender, EventArgs e)
    {
        Tcp t = new Tcp();
        Console.WriteLine(t.a);
    }

Answer 1

try this, Use must Call start For Initializing a:

public class Tcp
    {
        private int _a;
        public void start()
        {
            int[] i = { 10, 20, 30, 40, 50 };
            a = i[0];
        }
        public int a
        {
            get
            {
                return _a;
            }
            set
            {
                _a = value;
            }
        }
    }

        Tcp t = new Tcp();
        t.start();
        Console.WriteLine(t.a);