特别是，它支持多个主键字段，公开了一些用户界面的改进功能和一个处理与取消事件的新模型。

In particular, it supports multiple primary key fields and exposes some user interface enhancements and a new model for handling and canceling events.

youdao

做一个粗略的比喻的话，这就是和asp.net或WPF有点类似的模型，在这些模型中，你通过HTML或XAML来定义用户界面，在后置代码中处理事件。

In a rough analogy, this is a slightly similar model to ASP.NET or WPF, where you define your user interface in HTML or XAML, and have a code-behind page that handles events.

youdao

细粒度的事件处理对富用户界面至关重要。

Fine-grained event handling is the key to a rich user interface.

youdao