Expander是从动态资源中展开的，如果手动更改则不再起作用

发布于 2025-01-05 09:48:00 字数 1256 浏览 1 评论 0原文

经过大量搜索后，我想出了这段代码来通过代码扩展我的扩展器：我是 XAML/WPF 的新手，所以我很可能可以以更好的方式做到这一点，但经过大量搜索后，我很高兴我让它工作（但尚未完全）

XAML：将其添加到“标题”

 xmlns:System="clr-namespace:System;assembly=mscorlib"

，然后将其添加到 Window.Recources

 <System:Boolean x:Key="booexapnders">False          
        </System:Boolean>

这是扩展器的一部分（扩展器是在列表视图中的数据模板中制作的）

  <ListView x:Name="lsvteamleft" SelectionChanged="lsvleft_SelectionChanged"  GotFocus="lsv_GotFocus" ScrollViewer.VerticalScrollBarVisibility="Visible">
                        <ListView.ItemTemplate>
                            <DataTemplate>
                                <Expander Header="{Binding}" Margin="0,0,0,2" IsExpanded="{DynamicResource booexapnders}" >
                                    <Expander.HeaderTemplate>

我可以向此列表视图添加多个项目，因此有多个膨胀器制成。在 c# 中，我使用代码：

this.Resources["booexapnders"] = true; // to expand all the expanders
this.Resources["booexapnders"] = false; // to colapse all the expanders

现在的问题是，例如。我在列表视图中有 5 个项目，我想查看 1 的扩展版本，我用一个按钮将它们全部折叠（这有效），并在列表视图中手动展开我想要的项目（展开以查看更多信息），但是在我之后这样做后，我刚刚手动展开的那个将不再对“全部展开”或“全部折叠”按钮做出反应。

先感谢您。

原文

After lots of searching I came up with this code to expand my expander by code:
I am new to XAML/WPF so it is very well possible I can do this in better ways, but after lots of searching I am happy I got it working(but not yet completly)

XAML:
Added this to the "header"

 xmlns:System="clr-namespace:System;assembly=mscorlib"

then added this to Window.Recources

 <System:Boolean x:Key="booexapnders">False          
        </System:Boolean>

Here is the part of the expander(the expander is made in a datatemplate that is in a Listview)

  <ListView x:Name="lsvteamleft" SelectionChanged="lsvleft_SelectionChanged"  GotFocus="lsv_GotFocus" ScrollViewer.VerticalScrollBarVisibility="Visible">
                        <ListView.ItemTemplate>
                            <DataTemplate>
                                <Expander Header="{Binding}" Margin="0,0,0,2" IsExpanded="{DynamicResource booexapnders}" >
                                    <Expander.HeaderTemplate>

I am able to add multiple items to this listview and so there are multiple expanders made.
In c# I use the code:

this.Resources["booexapnders"] = true; // to expand all the expanders
this.Resources["booexapnders"] = false; // to colapse all the expanders

Now the problem is, for example. I got 5 items in the listview and I want to see the expanded version of 1, I colapse them all with a button(this works) and manualy expand the one I want(expanded to see more info) in the listview, HOWEVER after I did this the one that I just manualy expanded won t react anymore on the "expand all" or "collapse all" buttons.

Thank you in advance.

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