Question

我无法从如何获取WPF Toolkit＆＃39; CheckComboBox中所有选中项目的列表这样简单的事情。

查看：

<xctk:CheckComboBox DisplayMemberPath="Name"
                    ItemsSource="{Binding RouteSheetRecordOperations, Mode=OneWay}"
                    SelectedItemsOverride="{Binding SelectedRouteSheetRecordOperations, Mode=OneWayToSource}" />

查看型号：

Public ReadOnly Property RouteSheetRecordOperations As New ObservableCollection(Of RouteSheetRecordOperation)
Property SelectedRouteSheetRecordOperations As List(Of RouteSheetRecordOperation)
  Get
    Return _selectedRouteSheetRecordOperations
  End Get
  Set
    _selectedRouteSheetRecordOperations = Value
  End Set
End Property

主要问题是在SelectedRouteSheetRecordOperations属性的setter中，Value始终为Nothing（null）。

Answer 1

从Mode=OneWayToSource

中删除Binding

<xctk:CheckComboBox DisplayMemberPath="Name"
                ItemsSource="{Binding RouteSheetRecordOperations, Mode=OneWay}"
                SelectedItemsOverride="{Binding SelectedRouteSheetRecordOperations}" />

另请注意，当您在SelectedRouteSheetRecordOperations中选择项目时，CheckComboBox属性的setter不会被命中。应该将一个项目添加到源集合中，这样您也可以删除setter，并且您可能希望返回ObservableCollection(Of RouteSheetRecordOperation)。

另请注意，该媒体资源必须为public。

尝试使用上述XAML标记：

Private _selectedRouteSheetRecordOperations As New ObservableCollection(Of RouteSheetRecordOperation)
Public ReadOnly Property SelectedRouteSheetRecordOperations As ObservableCollection(Of RouteSheetRecordOperation)
Get
    Return _selectedRouteSheetRecordOperations
End Get
End Property

如何从WPF Toolkit的CheckComboBox

1 个答案: