С# Windows forms, багов нет но форма пустая, в чем проблема, как исправить?

Код везде показывается корректным, формы запускаются однако пустые.

form1

using System;
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;

namespace QuizApp
{
    public partial class Form1 : Form
    {
        private string connectionString = "Data Source=BUCK-TICK;Initial Catalog=QuizDB;Integrated Security=True";

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            LoadQuestions();
        }

        private void LoadQuestions()
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM Questions", connection);
                DataTable dataTable = new DataTable();
                adapter.Fill(dataTable);
                questionsGridView.DataSource = dataTable;
            }
        }

        private void addButton_Click(object sender, EventArgs e)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                SqlCommand command = new SqlCommand(
                    "INSERT INTO Questions (Question, Option1, Option2, Option3, Option4, CorrectOption) VALUES (@Question, @Option1, @Option2, @Option3, @Option4, @CorrectOption)",
                    connection);
                command.Parameters.AddWithValue("@Question", questionTextBox.Text);
                command.Parameters.AddWithValue("@Option1", option1TextBox.Text);
                command.Parameters.AddWithValue("@Option2", option2TextBox.Text);
                command.Parameters.AddWithValue("@Option3", option3TextBox.Text);
                command.Parameters.AddWithValue("@Option4", option4TextBox.Text);
                command.Parameters.AddWithValue("@CorrectOption", correctOptionComboBox.SelectedIndex + 1);

                command.ExecuteNonQuery();
                MessageBox.Show("Вопрос добавлен!");
                LoadQuestions();
            }
        }

        private void deleteButton_Click(object sender, EventArgs e)
        {
            if (questionsGridView.SelectedRows.Count > 0)
            {
                int id = Convert.ToInt32(questionsGridView.SelectedRows[0].Cells["Id"].Value);
                using (SqlConnection connection = new SqlConnection(connectionString))
                {
                    connection.Open();
                    SqlCommand command = new SqlCommand("DELETE FROM Questions WHERE Id = @Id", connection);
                    command.Parameters.AddWithValue("@Id", id);
                    command.ExecuteNonQuery();
                }

                MessageBox.Show("Вопрос удален!");
                LoadQuestions();
            }
            else
            {
                MessageBox.Show("Выберите вопрос для удаления.");
            }
        }
    }
}

form1.Designer

namespace QuizApp
{
    partial class Form1
    {
        private System.ComponentModel.IContainer components = null;
        private System.Windows.Forms.DataGridView questionsGridView;
        private System.Windows.Forms.TextBox questionTextBox;
        private System.Windows.Forms.TextBox option1TextBox;
        private System.Windows.Forms.TextBox option2TextBox;
        private System.Windows.Forms.TextBox option3TextBox;
        private System.Windows.Forms.TextBox option4TextBox;
        private System.Windows.Forms.ComboBox correctOptionComboBox;
        private System.Windows.Forms.Button addButton;
        private System.Windows.Forms.Button deleteButton;

        private void InitializeComponent()
        {
            this.questionsGridView = new System.Windows.Forms.DataGridView();
            this.questionTextBox = new System.Windows.Forms.TextBox();
            this.option1TextBox = new System.Windows.Forms.TextBox();
            this.option2TextBox = new System.Windows.Forms.TextBox();
            this.option3TextBox = new System.Windows.Forms.TextBox();
            this.option4TextBox = new System.Windows.Forms.TextBox();
            this.correctOptionComboBox = new System.Windows.Forms.ComboBox();
            this.addButton = new System.Windows.Forms.Button();
            this.deleteButton = new System.Windows.Forms.Button();

            // Add Button
            this.addButton.Text = "Добавить";
            this.addButton.Click += new System.EventHandler(this.addButton_Click);

            // Delete Button
            this.deleteButton.Text = "Удалить";
            this.deleteButton.Click += new System.EventHandler(this.deleteButton_Click);

            // Arrange Controls
            // Add controls to form
            this.Controls.Add(this.questionsGridView);
            this.Controls.Add(this.questionTextBox);
            this.Controls.Add(this.option1TextBox);
            this.Controls.Add(this.option2TextBox);
            this.Controls.Add(this.option3TextBox);
            this.Controls.Add(this.option4TextBox);
            this.Controls.Add(this.correctOptionComboBox);
            this.Controls.Add(this.addButton);
            this.Controls.Add(this.deleteButton);
        }
    }
}

QuizForm

using System;
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;

namespace QuizApp
{
    public partial class QuizForm : Form
    {
        private string connectionString = "Data Source=BUCK-TICK;Initial Catalog=QuizDB;Integrated Security=True";
        private int currentQuestionIndex = 0;
        private DataTable questions;

        public QuizForm()
        {
            InitializeComponent();
        }

        private void QuizForm_Load(object sender, EventArgs e)
        {
            LoadQuestions();
            ShowQuestion();
        }

        private void LoadQuestions()
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM Questions", connection);
                questions = new DataTable();
                adapter.Fill(questions);
            }
        }

        private void ShowQuestion()
        {
            if (currentQuestionIndex < questions.Rows.Count)
            {
                DataRow question = questions.Rows[currentQuestionIndex];
                questionLabel.Text = question["Question"].ToString();
                option1RadioButton.Text = question["Option1"].ToString();
                option2RadioButton.Text = question["Option2"].ToString();
                option3RadioButton.Text = question["Option3"].ToString();
                option4RadioButton.Text = question["Option4"].ToString();
            }
            else
            {
                MessageBox.Show("Викторина окончена!");
                this.Close();
            }
        }

        private void nextButton_Click(object sender, EventArgs e)
        {
            currentQuestionIndex++;
            ShowQuestion();
        }
    }
}

QuizForm.Designer

using System;
using System.Windows.Forms;


namespace QuizApp
{
    partial class QuizForm
    {
        private Label questionLabel;
        private RadioButton option1RadioButton;
        private RadioButton option2RadioButton;
        private RadioButton option3RadioButton;
        private RadioButton option4RadioButton;
        private Button nextButton;

        private void InitializeComponent()
        {
            this.questionLabel = new Label();
            this.option1RadioButton = new RadioButton();
            this.option2RadioButton = new RadioButton();
            this.option3RadioButton = new RadioButton();
            this.option4RadioButton = new RadioButton();
            this.nextButton = new Button();

            // Question Label
            this.questionLabel.AutoSize = true;
            this.questionLabel.Location = new System.Drawing.Point(20, 20);
            this.questionLabel.Size = new System.Drawing.Size(300, 20);
            this.questionLabel.Text = "Вопрос";

            // Option 1
            this.option1RadioButton.Location = new System.Drawing.Point(20, 60);
            this.option1RadioButton.Size = new System.Drawing.Size(300, 20);

            // Option 2
            this.option2RadioButton.Location = new System.Drawing.Point(20, 100);
            this.option2RadioButton.Size = new System.Drawing.Size(300, 20);

            // Option 3
            this.option3RadioButton.Location = new System.Drawing.Point(20, 140);
            this.option3RadioButton.Size = new System.Drawing.Size(300, 20);

            // Option 4
            this.option4RadioButton.Location = new System.Drawing.Point(20, 180);
            this.option4RadioButton.Size = new System.Drawing.Size(300, 20);

            // Next Button
            this.nextButton.Location = new System.Drawing.Point(20, 220);
            this.nextButton.Size = new System.Drawing.Size(100, 30);
            this.nextButton.Text = "Далее";
            this.nextButton.Click += new EventHandler(nextButton_Click);

            // QuizForm
            this.ClientSize = new System.Drawing.Size(400, 300);
            this.Controls.Add(this.questionLabel);
            this.Controls.Add(this.option1RadioButton);
            this.Controls.Add(this.option2RadioButton);
            this.Controls.Add(this.option3RadioButton);
            this.Controls.Add(this.option4RadioButton);
            this.Controls.Add(this.nextButton);
            this.Text = "Викторина";
            this.Load += new EventHandler(QuizForm_Load);
        }
    }
}