隐藏垂直滚动条/同步顶部项目与 Scrollable = false

发布于 2024-12-02 05:25:07 字数 726 浏览 5 评论 0原文

我正在尝试同步 2 个列表视图，以便其中一个实际上是一列的“冻结窗格”（想想 excel 冻结标题）。

但是，我在滚动时很难使顶部项目同步。我需要隐藏标题列表视图上的垂直和水平滚动条，这可以通过将 Scrollable 设置为 false 来实现。虽然这似乎禁用了“EnsureVisible”和“TopItem”功能？

我已经拦截了主列表视图上的滚动条消息，所以我知道何时滚动，只是由于某种原因我无法更新标题列表视图上的顶部项目以匹配。

我用于更新标题列表视图的代码如下：

//On vertical scroll click...
  if (e.Type == ScrollEventType.EndScroll)
  {
    int index = lvwHeader.FindItemWithText(lvwSource.TopItem.Text).Index;

    ListViewItem item = lvwHeader.Items[index];
    lvwHeader.TopItem = item;

    System.Diagnostics.Debug.WriteLine(lvwHeader.TopItem.Text + " - " + lvwSource.TopItem.Text);
  }

所以我想知道是否有另一种方法可以强制标题列表视图在 Scrollable = false 时将项目设置为 topitem，或者是否有更好的方法来解决此问题？

非常感谢

原文

I'm trying to sync up 2 list views, so that one of them is effectively a 'freeze pane' of one column (think excel freeze-headers).

However, I am having difficulty in getting the top items to sync up when scrolling. I need to hide the vertical and horizontal scrollbars on the header-list view, which can be achieved by setting Scrollable to false. Though this seems to disable the 'EnsureVisible' and 'TopItem' functionality?

I have intercepted the scroll bar messages on the master listview, so I know when that is being scrolled, just for some reason I'm unable to update the top item on the header listview to match up.

The code I have for updating the header listview is as follows:

//On vertical scroll click...
  if (e.Type == ScrollEventType.EndScroll)
  {
    int index = lvwHeader.FindItemWithText(lvwSource.TopItem.Text).Index;

    ListViewItem item = lvwHeader.Items[index];
    lvwHeader.TopItem = item;

    System.Diagnostics.Debug.WriteLine(lvwHeader.TopItem.Text + " - " + lvwSource.TopItem.Text);
  }

So I was wondering if there was another way to force the header listview to set an item as the topitem whilst Scrollable = false, or if there was a better way to approach this?

Many thanks

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