如果我对一个组合框的更改仍然受到影响，则动态添加到FlowLayoutPanel的多个组合框

Question

我动态地向FlowLayoutPanel添加了多个组合框。如果我在其中一个上收到onchange，则剩余的组合框也会受到影响。我不想影响其余的组合框。我该怎么办？

 foreach(var video in videos) 
{
    var subvideos = video.Descendants("subvideos");
    if (subvideos.Count() >= 1) 
    {
        ComboBox subvideo = new ComboBox();
        subvideo.Name = "subvideo" + i;
        subvideo.Items.Add(video.Attribute("name").Value);
        foreach(var videoname in subvideos) 
        {
            subvideo.Items.Add(videoname.Value);
        }
        flowlayoutpanel1.Controls.Add(subvideo);
        i++;
    } 
    else 
    {
        var text = new TextBox();
        text.Text = video.Attribute("name").Value;
        flowlayoutpanel1.Controls.Add(text);
    }
}