Question

所以我要在UserControl中定义一个DataTemplate。资源如下：

override func viewDidLoad() {
    super.viewDidLoad()

    // Configure Navigation Bar So it is transparent
    if let navBar = self.navigationController?.navigationBar {
        let image = UIImage()
        navBar.setBackgroundImage(image, for: .default)
        navBar.shadowImage = image
        navBar.isTranslucent = true
        navBar.tintColor = UIColor.black
        // Only Back Arrow without Back text
        navBar.topItem!.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
    }
}
override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    showPopup()
}
func showPopup() -> Void {
    let popupVC = PopupViewController()
    self.popupViewController = popupVC
    popupVC.delegate = self

    self.addChildViewController(popupVC)
    self.view.addSubview(popupVC.view)

    NSLayoutConstraint.autoCreateAndInstallConstraints {
        popupVC.view.autoPin(toTopLayoutGuideOf: self, withInset: 16)
        popupVC.view.autoPinEdge(toSuperviewEdge: .leading, withInset: 16)
        popupVC.view.autoPinEdge(toSuperviewEdge: .trailing, withInset: 16)
    }
    self.view.layoutIfNeeded()
    popupVC.didMove(toParentViewController: self)
}

然后在可视树中有一个ItemsControl定义，如下所示：

    <DataTemplate x:Key="Impact">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition/>
                <ColumnDefinition/>
            </Grid.ColumnDefinitions>
            <TextBlock Grid.Column="0"
                       Text="Impact:" />
            <ComboBox Grid.Column="1"
                      ItemsSource="{Binding Impacts}">
            </ComboBox>
        </Grid>
    </DataTemplate>

是否有一种方法可以将资源中的<ItemsControl ItemsSource="{Binding Path=ViewModelsList}"> <ItemsControl.Resources> <DataTemplate DataType="{x:Type ui:FirstViewModel}"> <ContentControl ContentTemplate="{StaticResource Impact}"></ContentControl> </DataTemplate> <DataTemplate DataType="{x:Type ui:SecondViewModel}"> <ContentControl ContentTemplate="{StaticResource Impact}"></ContentControl> ... </DataTemplate> </ItemsControl.Resources> </ItemsControl>与DataTemplate的DataType中定义的各个ViewModel类型相关联？

也许有一种方法可以将DataType传递给ContentControl？

Answer 1

将此添加到您的ContentControls：

Content="{Binding}"

WPF-使用ContentControl中父DataTemplate中的DataType

1 个答案: