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;
using System.IO;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private const string path = "test.txt";
        protected int currentnumber = 0;
        protected const int max_num = 5;
        protected const int size = 5;
        public ankieta[] tab = new ankieta[max_num];

        public struct ankieta
        {
            public string[] str;
            public int selectedNumber;
            public ankieta(string[] st1)
            {
                this.str = st1;
                this.selectedNumber = 0;
            }

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            for(int i = 0; i < max_num; i++)
            {
                tab[i].str = new string[5];
            }
            using (StreamReader sr = new StreamReader(path))
            {
                string line;
                int j = 0, p = 0;
                while((line = sr.ReadLine()) != null)
                {
                    tab[p].str[j] = line;

                    j++;
                    if (j % 5 == 0)
                    {
                        j = 0;
                        p++;
                    }
                }
            }
            InputText(currentnumber);
        }

        public void InputText(int num)
        {
            if (num < 0 || num > max_num) return;
            textBox1.Text = tab[num].str[0];
            radioButton1.Text = tab[num].str[1];
            radioButton2.Text = tab[num].str[2];
            radioButton3.Text = tab[num].str[3];
            radioButton4.Text = tab[num].str[4];

            radioButton1.Checked = false;
            radioButton2.Checked = false;
            radioButton3.Checked = false;
            radioButton4.Checked = false;

        }



        public Form1()
        {
            InitializeComponent();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (!button1.Enabled) button1.Enabled = true;
            if (currentnumber + 1 < max_num) InputText(++currentnumber);
            else button4.Enabled = false;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if(!button4.Enabled) button4.Enabled = true;
            if (currentnumber - 1 > 0) InputText(--currentnumber);
            else button1.Enabled = false;
        }

        private void button2_Click(object sender, EventArgs e)
        {

        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            tab[currentnumber].selectedNumber = 1;
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            tab[currentnumber].selectedNumber = 2;
        }

        private void radioButton3_CheckedChanged(object sender, EventArgs e)
        {
            tab[currentnumber].selectedNumber = 3;
        }

        private void radioButton4_CheckedChanged(object sender, EventArgs e)
        {
            tab[currentnumber].selectedNumber = 4;
        }
    }
}