如果页允许为控件定义自定义特性，则任何无法识别的属性都会存储为自定义的特性。

Any property that is not recognized is stored as a custom attribute, if the page allows custom attributes to be defined for controls.

youdao

如果页允许为控件定义自定义特性，则任何无法识别的属性都会存储为自定义的特性。

Any property that is not recognized is stored as a custom attribute, if the page allows custom attributes to be defined for controls.

youdao