blocks|key|3421344|text|我会做一个up按钮，在它的OnClick事件中，做一些类似的事情：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3421345|int+location+=+listItems.SelectedIndex;
if+(location+>+0)
{
++++object+rememberMe+=+listItems.SelectedItem;
++++listItems.Items.RemoveAt(location);
++++listItems.Items.Insert(location+-+1,+rememberMe);
++++listItems.SelectedIndex+=+location+-+1;
}|code-block|syntax|javascript|3421346|请记住，这还没有经过测试，因为我现在还没有打开visual+studio，但它应该会给你一个好的想法。|3421347|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I would make a button that is an up button, and in its OnClick event, do something like:

<pre><code>int location = listItems.SelectedIndex;
if (location &gt; 0)
{
 object rememberMe = listItems.SelectedItem;
 listItems.Items.RemoveAt(location);
 listItems.Items.Insert(location - 1, rememberMe);
 listItems.SelectedIndex = location - 1;
}
</code></pre>

Keep in mind this isn't tested as I don't have visual studio open right now, but it should give you a good idea.

blocks|key|3421434|text|将ObservableCollection用作ListBox的集合|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3421435|ObservableCollection有一个很棒的Move方法，它可以激发所有好的事件，让你的列表框做出响应……|offset|length|3421436|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms654933.aspx^0|0|Q|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Use an ObservableCollection as a collection for your ListBox

ObservableCollection has a nifty <a href="http://msdn.microsoft.com/en-us/library/ms654933.aspx" rel="nofollow noreferrer">Move</a> method which fires all the nice events goodness for your listbox to respond...

blocks|key|3421374|text|我会在模型中包括项目的顺序(即。您的数据类)。然后，我将ListBox绑定到一个按该值排序的CollectionView。然后，您的向上/向下按钮将在您的两个数据项中简单地交换此排序属性的值。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3421375|entityMap^0|1A|E|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

I would include the order of the item in the model (ie. your data class). Then I'd bind the ListBox to a <code>CollectionView</code> that is sorted by that value. Your up/down buttons would then simply swap the value of this sort property in two of your data items.

blocks|key|3421472|text|向上移动|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3421473|int+index+=+listbox.SelectedIndex;
if+(index+!=+-1)
{
++++if+(index+>+0)
++++{
++++++++ListBoxItem+lbi+=+(ListBoxItem)listbox.Items[index];
++++++++listbox.Items.RemoveAt(index);
++++++++index--;
++++++++listbox.Items.Insert(index,+lbi);
++++++++listbox.SelectedIndex+=+index;
++++++++listbox.ScrollIntoView(lbi);
++++}
}|code-block|syntax|javascript|3421474|下移|3421475|int+index+=+listbox.SelectedIndex;
if+(index+!=+-1)
{
++++if+(index+<+listbox.Items.Count+-+1)
++++{
++++++++listboxlbi+=+(ListBoxItem)listbox.Items[index];
++++++++listbox.Items.RemoveAt(index);
++++++++index%2B%2B;
++++++++listbox.Items.Insert(index,+lbi);
++++++++listbox.SelectedIndex+=+index;
++++++++listbox.ScrollIntoView(lbi);
++++}
}|3421476|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Move Up

<pre><code>int index = listbox.SelectedIndex;
if (index != -1)
{
 if (index &gt; 0)
 {
 ListBoxItem lbi = (ListBoxItem)listbox.Items[index];
 listbox.Items.RemoveAt(index);
 index--;
 listbox.Items.Insert(index, lbi);
 listbox.SelectedIndex = index;
 listbox.ScrollIntoView(lbi);
 }
}
</code></pre>

Move Down

<pre><code>int index = listbox.SelectedIndex;
if (index != -1)
{
 if (index &lt; listbox.Items.Count - 1)
 {
 listboxlbi = (ListBoxItem)listbox.Items[index];
 listbox.Items.RemoveAt(index);
 index++;
 listbox.Items.Insert(index, lbi);
 listbox.SelectedIndex = index;
 listbox.ScrollIntoView(lbi);
 }
}
</code></pre>

blocks|key|415254|text|我非常确定你可以把任何你想要的东西放到ListBox中。因此，您可以只制作自己的控件，该控件有一个标签和两个箭头按钮。然后将其抛入ListBox并附加事件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|415255|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I am pretty sure you can throw whatever you want into the ListBox. So you could just make your own control that has a label and two buttons for the arrows. Then throw it in the ListBox and attach the events.

blocks|key|2325315|text|你要绑定它吗？尝试更改绑定对象项的顺序并更新列表框。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2325316|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Are you binding it? Try to change the order of the item of the binding object and upadate the listbox.

blocks|key|3421487|text|如果您正在绑定它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3421488|private+void+MoveItemUp()
++++{
++++++++if+(SelectedGroupField+!=+null)
++++++++{
++++++++++++List<string>+tempList+=+AvailableGroupField;
++++++++++++string+selectedItem+=+SelectedGroupField;

++++++++++++int+currentIndex+=+tempList.IndexOf(selectedItem);

++++++++++++if+(currentIndex+>+0)
++++++++++++{
++++++++++++++++tempList.Remove(selectedItem);
++++++++++++++++tempList.Insert(currentIndex+-+1,+selectedItem);
++++++++++++++++AvailableGroupField+=+null;
++++++++++++++++AvailableGroupField+=+tempList;
++++++++++++++++SelectedGroupField+=+AvailableGroupField.Single(p+=>+p+==+selectedItem);
++++++++++++}
++++++++}
++++}

++++private+void+MoveItemDown()
++++{
++++++++if+(SelectedGroupField+!=+null)
++++++++{
++++++++++++List<string>+tempList+=+AvailableGroupField;
++++++++++++string+selectedItem+=+SelectedGroupField;

++++++++++++int+currentIndex+=+tempList.IndexOf(selectedItem);

++++++++++++if+(currentIndex+<+(tempList.Count+-+1))
++++++++++++{
++++++++++++++++tempList.Remove(selectedItem);
++++++++++++++++tempList.Insert(currentIndex+%2B+1,+selectedItem);
++++++++++++++++AvailableGroupField+=+null;
++++++++++++++++AvailableGroupField+=+tempList;
++++++++++++++++SelectedGroupField+=+AvailableGroupField.Single(p+=>+p+==+selectedItem);
++++++++++++}
++++++++}++++++++
++++}|code-block|syntax|javascript|3421489|我没有解释如何将命令绑定到方法，假设您已经弄清楚了这一点。|3421490|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you are binding it:

<pre><code>private void MoveItemUp()
 {
 if (SelectedGroupField != null)
 {
 List&lt;string&gt; tempList = AvailableGroupField;
 string selectedItem = SelectedGroupField;

 int currentIndex = tempList.IndexOf(selectedItem);

 if (currentIndex &gt; 0)
 {
 tempList.Remove(selectedItem);
 tempList.Insert(currentIndex - 1, selectedItem);
 AvailableGroupField = null;
 AvailableGroupField = tempList;
 SelectedGroupField = AvailableGroupField.Single(p =&gt; p == selectedItem);
 }
 }
 }

 private void MoveItemDown()
 {
 if (SelectedGroupField != null)
 {
 List&lt;string&gt; tempList = AvailableGroupField;
 string selectedItem = SelectedGroupField;

 int currentIndex = tempList.IndexOf(selectedItem);

 if (currentIndex &lt; (tempList.Count - 1))
 {
 tempList.Remove(selectedItem);
 tempList.Insert(currentIndex + 1, selectedItem);
 AvailableGroupField = null;
 AvailableGroupField = tempList;
 SelectedGroupField = AvailableGroupField.Single(p =&gt; p == selectedItem);
 }
 } 
 }
</code></pre>

I have not explained how to bind the command to a method assuming you would have already figured that out.

This is related to my last post.

i want to have up and down buttons on listbox items
so that they can moved up/down ie changed its index
in the list. 

Any ideas how I would actualy do this?

Malcolm

WPF - Implementing a listbox that allows the items to be moved up and down

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

这与我上一篇文章有关。我想在列表框项目上有向上和向下按钮，这样他们就可以向上/向下移动，即改变了它在列表中的索引。你知道我该怎么做吗？马尔科姆

问WPF -实现允许项目上下移动的列表框
EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问WPF -实现允许项目上下移动的列表框EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问WPF -实现允许项目上下移动的列表框
EN