我需要將我的ComboBox綁定到UserControl(而不是包含我的ComboBox的ListView的ItemSources)的DataContext的'Rayons'屬性。DataControl上的UserControl的DataContext而不是WPF/MVVM中的ListBox DataBind
我試圖使用RelativeSource,但它不起作用,我在調試窗口中沒有錯誤消息。
簡化代碼:
<UserControl xmlns:my="clr-UI.View"
x:Class="UI.View.MontureView"
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:cmd="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.WPF4"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="673" d:DesignWidth="980">
<ListView ItemsSource="{Binding Path=Monture, Mode=TwoWay}" Margin="0,39,0,95" Height="600" HorizontalAlignment="Center">
<ListView.View>
<GridView>
<GridViewColumn >
<GridViewColumn.CellTemplate >
<DataTemplate>
<ComboBox Height="25" HorizontalAlignment="Center" Width="125"
Name="comboBoxRay" Margin="0,2,0,3"
ItemsSource="{Binding Path=Rayons, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}"
SelectedValue="{Binding Path=IDRayon, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
DisplayMemberPath="SRAY_LIBELLE"
SelectedValuePath="SRAY_ID" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</UserControl>
我如何處理這種情況?
我發現documentation,但它並沒有幫助