Handling these events puts all of your validation code in a single location, rather than scattering it throughout your project.

处理这些事件时会将所有验证程序码置于单一位置，而不是将它四散于专案各处。

youdao

Handling these events puts all of your validation code in a single location, rather than scattering it throughout your project.

处理这些事件时会将所有验证程序码置于单一位置，而不是将它四散于专案各处。

youdao