我写了一本由标准控制产生的用户目录。
This UserControl has a Property which is a list of a abstract class. But i get an Error of the PropertyGrid which say that it could not create a new instance of the abstract class because it s abstract.
如何处理这一问题?
不能设立优秀班级,必须执行。
抽象的班级是无法即时的班级,但必须继承。
This is why you see an error from the PropertyGrid.
You will need to create a base class that implements all or some of your abstract class or you might be able to use an interface.
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