default constructor

基本解释

You must have a public default constructor.
您必须具有公共缺省构造器。
This instantiation involves the default constructor for the class being called, with the injection of dependencies happening afterwards.
这种实例化涉及到要调用的类的默认构造函数，随后还要注入依赖关系。
For instance, if you decided that all classes should have a default constructor that takes no arguments, you could write a rule that checks for a constructor on each class of an assembly.
例如，如果你决定所有的类都应该具有一个不带任何参数的默认构造函数，则可以编写一条规则，以确保程序集的每个类上都具有一个构造函数。
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