如何触发FlowLayoutPanel的滚动事件？

Question

这是我的密码：

public partial class Form1 : Form {

  public Form1() {
    InitializeComponent();

    for (int i = 0; i < 10; i++) {
      Button btn = new Button();
      btn.Text = "TEST";
      btn.Height = 35;

      this.flowLayoutPanel1.Controls.Add(btn);
    }

    this.flowLayoutPanel1.AutoScroll = true;
    this.flowLayoutPanel1.Scroll += FlowLayoutPanel1_Scroll;
  }

  private void FlowLayoutPanel1_Scroll(object sender, ScrollEventArgs e) {
    MessageBox.Show("Event Triggered");
  }
}

下面是UI的样子：

​

​

当我在流布局面板内用鼠标滚动时，滚动事件似乎不会被触发。

解决办法应该不难找到，但我坚持了几个小时。有人能给我指路吗？谢谢！！

Answer 1

有一个特殊的MouseWheel事件可以捕捉到

flowLayoutPanel1.MouseWheel += FlowLayoutPanel1_MouseWheel;

private void FlowLayoutPanel1_MouseWheel(object sender, MouseEventArgs e)
{
    Console.WriteLine("Scrolling Wheel");
}