Hangman V2

/*
 * Created by SharpDevelop.
 * User: Admin
 * Date: 8.2.2022 г.
 * Time: 8:11
 *
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using System.Linq;

namespace besene_12a
{
    /// <summary>
    /// Description of MainForm.
    /// </summary>
    public partial class MainForm : Form
    {
        string[] words;
        string pcWord = "";
        List<string> activeWord = new List<string>();
        List<string> wrongLetters = new List<string>();
        string[] pictures = {"hang1.png", "hang2.png",
            "hang3.png", "hang4.png","hang5.png","hang6.png",
            "hang7.png","hang8.png","hang9.png", "hang10.png"};
        int index = 0;

        public MainForm()
        {
            //
            // The InitializeComponent() call is required for Windows Forms designer support.
            //
            InitializeComponent();

            //
            // TODO: Add constructor code after the InitializeComponent() call.
            //
        }
        void MainFormLoad(object sender, EventArgs e)
        {
            words = File.ReadAllLines("words.txt");

        }
        void ButtonNewGameClick(object sender, EventArgs e)
        {
            labelLetter.Visible = true;
            textBoxLetter.Visible = true;
            buttonCheck.Visible = true;
            labelResult.Visible = false;
            labelWord.ForeColor = Color.Black;

            wrongLetters.Clear();
            activeWord.Clear();
            index = 0;

            Random r = new Random();

            int wordIndex = r.Next(0, words.Length);

            pcWord = words[wordIndex];

            for (int i = 0; i < pcWord.Length; i++)
            {
                activeWord.Add("_");
            }

            labelWord.Text = string.Join("  ", activeWord);

        }


        void ButtonCheckClick(object sender, EventArgs e)
        {
            string userLetter = textBoxLetter.Text.ToLower();

            if (userLetter.Length != 1)
            {
                MessageBox.Show("Въведи буква");
                return;
            }

            if (char.Parse(userLetter) < 'а'
                ||  char.Parse(userLetter) > 'я')
            {
                MessageBox.Show("Въведи буква между 'а' и 'я'");
                return;
            }

            textBoxLetter.Text = "";

            bool isWrong = true;

            for (int i = 0; i < pcWord.Length; i++)
            {
                if (char.Parse(userLetter) == pcWord[i])
                {
                    isWrong = false;
                    activeWord[i] = userLetter;
                }
            }

            labelWord.Text = string.Join("  ", activeWord);

            if (!activeWord.Any(x => x == "_"))
            {
                labelLetter.Visible = false;
                textBoxLetter.Visible = false;
                buttonCheck.Visible = false;
                labelWord.ForeColor = Color.Green;

                labelWord.Text = string.Join("  ", activeWord);

                labelResult.Visible = true;
                labelResult.ForeColor = Color.Green;
                labelResult.Text = "ПЕЧЕЛИШ !!!";
            }


            if (isWrong)
            {
                if (!wrongLetters.Contains(userLetter))
                {
                    wrongLetters.Add(userLetter);
                    labelWrongLetters.Text = string.Join(", ", wrongLetters);
                    pictureBox1.Image = Image.FromFile(pictures[index]);
                    index++;

                    if (index >= pictures.Length)
                    {
                        labelLetter.Visible = false;
                        textBoxLetter.Visible = false;
                        buttonCheck.Visible = false;
                        labelWord.ForeColor = Color.Red;

                        var word = pcWord.ToCharArray();
                        labelWord.Text = string.Join("  ", word);

                        labelResult.Visible = true;
                        labelResult.ForeColor = Color.Red;
                        labelResult.Text = "ГУБИШ !!!";
                    }
                }
            }

        }
    }
}