WPF：展开/折叠ListView中的项目

Question

我有以下ListView：

点击父行中的红色按钮，我想显示从属行。第二次单击时，应再次隐藏行。

我是WPF的新手并且不知道1.如何获得可扩展/可折叠的行以及2.如何在父行和子行之间创建关系。

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>

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

Answer 1

你应该使用Expander Control

过去 Customizing WPF Expander with ControlTemplate

Answer 2

您需要TreeView控件。

google上第一个可用于“wpf treeview tutorial”的链接：http://www.howdoicode.net/2011/10/wpf-treeview-example-part-4.html