扩展方法试图调用受保护的方法/错误显示动态参数 [英] Extensions Method trying to call protected methods / wrong exhibition of dynamic parameters

问题描述

我有一个名为NIFERepository的类.它包含一个SaveObject方法，该方法不返回任何内容并在数据库上执行操作.

I have a class named NIFERepository. It contains a SaveObject method, which returns nothing and performs an operation on a database.

public class NIFERepository<E>
{
    protected void SaveObject(object saveObject)
    {
        if (saveObject is E)
            this.RepositorySession.Merge(saveObject);
    }
}

1.我希望创建一个公共扩展方法来调用此SaveObject()方法，如下所示:

1 . I wish to create a public extension method who calls this SaveObject() method, like this:

    public static class NIFERepositoryExtensions
    {
        public static T Save<T, E>(this T self, E saveObject) where T : NIFERepository<E>
        {
            self.SaveObject(saveObject);
            return self;
        }
    } 

但是受保护的范围不允许我的扩展方法识别它.

But the protected scope doesn't allow my extensions method to recognize it.

我有办法让这种形式的方法起作用吗?

Is there a way for me to get a method of this form to work?

2.我创建了2种类型的扩展方法:T和E.例如，T是调用它的实例，而E是我的ProductRepository<Product>中定义的类型.当我调用此方法时，未显示定义的类型.

2 . I created my extension method with 2 types: T and E. T is the instance who called it, and E is the defined type into my ProductRepository<Product>, for example. When I call this method, the defined type is not shown.

我有办法让它正常工作吗?

Is there a way for me to get this to work?

推荐答案

1. 您不能使用扩展方法来违反封装.
   如果该类未公开该方法，则无法调用该方法(Reflection除外).
   由于某种原因，该方法(希望是)是protected；您可能做错了事.

1. You cannot use extension methods to violate encapsulation.
   If the class does not expose the method, you can't call it (except with Reflection).
   The method is (hopefully) protected for a reason; you're probably doing something wrong.

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