在NumericUpDown中滚动

Question

当我在NumericUpDown中滚动时，我希望触发一个事件。当我在NumericUpDown中时，这段代码似乎忽略了滚动：

public Form1()
{
    InitializeComponent();
    MouseWheel += new MouseEventHandler(mousewheel);
}

void mousewheel(object sender, MouseEventArgs e)
{
    System.Windows.Forms.MessageBox.Show("message");
}

Answer 1

    public Form1()
    {
        InitializeComponent();
        numericUpDown1.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.numericUpDown1_MouseWheel);
    }

    private void numericUpDown1_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)
    {
        MessageBox.Show("hello");
    }