Custom Scrollbar

https://programmerall.com/article/5547681052/

C# winform custom scroll bar - Programmer All

private void button_minimize_Click(object sender, EventArgs e)
{
    WindowState = FormWindowState.Minimized;
}

private void button_maximize_Click(object sender, EventArgs e)
{
    WindowState = WindowState == FormWindowState.Maximized ? FormWindowState.Normal : FormWindowState.Maximized;
}

private void button_close_Click(object sender, EventArgs e)
{
    Close();
}