本实用程序仅可用于根组件属性，不可用于其他组件，如子组件。

This utility can only be used on Root component attributes, and cannot be used on other components such as child components.

youdao

处理根组件是设计器宿主、设计时环境和用户界面之间的粘合剂的唯一需要技巧的部分。

Handling the root component is the only tricky part of the adhesive between the designer host, the design-time environment, and the user interface.

youdao

既然您知道了第一个组件必须是根组件，那么如何确保正确的组件是第一个组件呢？

Now that you know that the first component has to be the root component, how do you ensure that the right component is the first?

youdao