Multi-threaded splash screen in C#?

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The trick is to to create separate thread responsible for splash screen showing.
When you run you app .net creates main thread and loads specified (main) form. To conceal hard work you can hide main form until loading is done.

Assuming that Form1 – is your main form and SplashForm is top level, borderles nice splash form:

private void Form1_Load(object sender, EventArgs e)
{
    Hide();
    bool done = false;
    ThreadPool.QueueUserWorkItem((x) =>
    {
        using (var splashForm = new SplashForm())
        {
            splashForm.Show();
            while (!done)
                Application.DoEvents();
            splashForm.Close();
        }
    });

    Thread.Sleep(3000); // Emulate hardwork
    done = true;
    Show();
}

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