WPF：展开/折叠 ListView 中的项目
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/16015574/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
WPF: Expand/Collapse items in ListView
提问by mburm
I have got the following ListView:
我有以下列表视图：
At click on the red button from the parent row I want to show the subordinated rows. With a second click the rows should be hidden again.
单击父行中的红色按钮时，我想显示从属行。再次单击应再次隐藏行。
I'm new at WPF and have no idea 1. how to get a row expandable/collapsable and 2. how to create a relationship between parent and children rows.
我是 WPF 的新手，不知道 1. 如何获得可展开/可折叠的行和 2. 如何在父行和子行之间创建关系。
My XAML is the following:
我的 XAML 如下：
<ListView Name="lvUpgrade">
<ListView.View>
<GridView>
<GridViewColumn Width="20px">
<GridViewColumn.CellTemplate>
<DataTemplate>
<Image Source="{Binding Path=Icon}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Width="75px" DisplayMemberBinding="{Binding Path=Time, StringFormat={}{0:HH:mm:ss}}" />
<GridViewColumn Width="300px" Header="Nachricht" DisplayMemberBinding="{Binding Path=Message}" />
</GridView>
</ListView.View>
</ListView>
The code behind:
背后的代码：
Public Class Upgrade
Public Sub AddMessage(ByVal message As Message)
Me.lvUpgrade.Items.Add(message)
End Sub
Public Class Message
Public Enum MessageType
Normal
Information
Success
Warning
[Error]
End Enum
Public Sub New(ByVal type As MessageType, ByVal message As String)
_Type = type
_Message = message
End Sub
Private _Type As MessageType = MessageType.Normal
Public ReadOnly Property Type As MessageType
Get
Return _Type
End Get
End Property
Private _Message As String = String.Empty
Public ReadOnly Property Message As String
Get
Return _Message
End Get
End Property
Private _Time As DateTime = Now
Public ReadOnly Property Time As DateTime
Get
Return _Time
End Get
End Property
Public ReadOnly Property Icon As BitmapImage
Get
Select Case Me.Type
Case MessageType.Information
Return My.Resources.Information16.ToBitmapImage
Case MessageType.Success
Return My.Resources.OK16.ToBitmapImage
Case MessageType.Warning
Return My.Resources.Alert16.ToBitmapImage
Case MessageType.Error
Return My.Resources.Error16.ToBitmapImage
Case Else
End Select
Return Nothing
End Get
End Property
End Class
End Class
回答by makc
回答by Felix C
You need the TreeViewcontrol.
你需要TreeView控制。
First link available on google for "wpf treeview tutorial": http://www.howdoicode.net/2011/10/wpf-treeview-example-part-4.html
谷歌上可用的第一个链接“wpf 树视图教程”：http: //www.howdoicode.net/2011/10/wpf-treeview-example-part-4.html
