如何动态加载用户控件？ [英] How do I load user controls dynamically?

问题描述

如何在窗口中动态加载用户控件（在运行时使用代码）？

How can I load a user control[s] in a window dynamically (using code at runtime)?

推荐答案

I强烈建议您查看 Prism ，因为复合用户界面正是它的用途。但是，由于这将需要您重构整个应用程序，因此我也将直接回答您的问题。

I'd highly recommend having a look at Prism, since composite user interfaces is what it's for. However, since this would require you refactoring your entire application, I'll also answer your question directly.

如果您希望在容器中使用单个用户控件，请放置ContentControl在您的XAML中，然后设置Content属性。如果使用的是视图模型，则可以将Content绑定到视图模型上的FrameworkElement属性：

If you want a single user control in a container, put a ContentControl in your XAML and then set the Content property. If you are using a view model, you could bind Content to a FrameworkElement property on the view model:

contentControlInstance.Content = new CustomUserControl();

如果要在列表中使用多个控件，请使用ItemsControl并将ObservableCollection<>分配给ItemsSource属性。如果使用的是视图模型，则可以将ItemsSource绑定到视图模型上的ObservableCollection属性。

If you want multiple controls in a list, use an ItemsControl and assign an ObservableCollection<> to the ItemsSource property. If you are using a view model, you could bind ItemsSource to an ObservableCollection property on the View Model.

然后，您可以从该ObservableCollection中添加/删除视图：

Then you can just add/remove views from that ObservableCollection:

private ObservableCollection<FrameworkElement> views = 
    new ObservableCollection<FrameworkElement>();

private void Initialize()
{
    itemsControl.ItemsSource = views;
}

private void AddView(FrameworkElement frameworkElement)
{
    views.Add(frameworkElement);
}

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