WPF:在DataTemplate中
问题描述:
定义的组合框添加一个按钮,我有这个ItemsControl
在我的XAML定义WPF:在DataTemplate中
<ItemsControl Grid.ColumnSpan="3" Grid.Row="1" HorizontalAlignment="Center" ItemsSource="{Binding MyItems, Mode=TwoWay}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Label HorizontalContentAlignment="Center" Grid.Column="0" Content="{Binding FirstProperty}"/>
<Label HorizontalContentAlignment="Center" Grid.Column="1" Content="{Binding SecondProperty}"/>
<Label HorizontalContentAlignment="Center" Grid.Column="2" Content="{Binding ThirdProperty}"/>
<ComboBox HorizontalAlignment="Center" ItemsSource="{Binding CBSource}" Grid.Column="2" Width="140" Visibility="{Binding HasCombobox, Converter={StaticResource BoolToVis}}">
<ComboBoxItem>
<Button Content="INeedAButtonHere"></Button>
</ComboBoxItem>
</ComboBox>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
我需要添加到这样一个Button
创建的每个ComboBox
,可能是放置在的底部由于ComboBox
有源码,因此下拉菜单。显示UserControl
时,我当前的代码会引发异常(XamlParseError)。如何做到这一点?
答
你可以使用一个CompositeCollection
:
<ItemsControl Grid.ColumnSpan="3" Grid.Row="1" HorizontalAlignment="Center"
ItemsSource="{Binding MyItems}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.Resources>
<CollectionViewSource x:Key="cvs" Source="{Binding CBSource}" />
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Label HorizontalContentAlignment="Center" Grid.Column="0" Content="TEST"/>
<Label HorizontalContentAlignment="Center" Grid.Column="1" Content="{Binding SecondProperty}"/>
<Label HorizontalContentAlignment="Center" Grid.Column="2" Content="{Binding ThirdProperty}"/>
<ComboBox HorizontalAlignment="Center" Grid.Column="2" Width="140" Visibility="{Binding HasCombobox, Converter={StaticResource BoolToVis}}">
<ComboBox.ItemsSource>
<CompositeCollection>
<CollectionContainer Collection="{Binding Source={StaticResource cvs}}" />
<ComboBoxItem>
<Button Content="INeedAButtonHere"></Button>
</ComboBoxItem>
</CompositeCollection>
</ComboBox.ItemsSource>
</ComboBox>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
+1
我甚至不知道这种工具的存在。它完美的工作,谢谢 –
你想在组合框的每个项目按钮?或者只是每个组合框的按钮? – mm8
只需为每个组合框设置一个按钮,放置在下拉框的底部 –