我如何听在ListView滚动？ [英] How do I listen for scrolling in a ListView?

问题描述

ListView控件似乎并不支持Scroll事件。我需要调用每当列表滚动功能;我将如何去有关？

The ListView doesn't seem to support the Scroll event. I need to call a function whenever the list is scrolled; how would I go about that?

推荐答案

为什么你需要调用一个函数时，列表滚动？

Why do you need to call a function when the list is scrolled?

如果您要更改的项目，因为它的滚动我会建议列表视图设置为虚拟的。

If you are changing the items as it's scrolled i would recommend setting the listview to virtual.

或者你可以重写ListView和做到这一点：

Or you could override the listview and do this:

public class TestListView : System.Windows.Forms.ListView
{
    private const int WM_HSCROLL = 0x114;
    private const int WM_VSCROLL = 0x115;
    public event EventHandler Scroll;

    protected void OnScroll()
    {

        if (this.Scroll != null)
            this.Scroll(this, EventArgs.Empty);

    }

    protected override void WndProc(ref System.Windows.Forms.Message m)
    {
        base.WndProc(ref m);
        if (m.Msg == WM_HSCROLL || m.Msg == WM_VSCROLL)
            this.OnScroll();
    }
}

这篇关于我如何听在ListView滚动？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！