未显示简单的Windows窗体

using System.Windows.Forms;

public class MainForm : Form
{
    public MainForm()
    {
        InitializeComponent();
    }

    private void InitializeComponent()
    {
        this.SuspendLayout();
        // 
        // MainForm
        // 
        this.ClientSize = new System.Drawing.Size(284, 261);
        this.Name = "MainForm";
        this.Load += new System.EventHandler(this.MainForm_Load);
        this.ResumeLayout(false);
    }

    private void MainForm_Load(object sender, EventArgs e)
    {
        // 初始化代码
    }
}

static class Program
{
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new MainForm());
    }
}

this.Visible = false; // 确保没有这样的代码

private void ShowFormFromAnotherThread()
{
    if (InvokeRequired)
    {
        Invoke(new MethodInvoker(ShowFormFromAnotherThread));
    }
    else
    {
        MainForm form = new MainForm();
        form.Show();
    }
}