如何访问受保护的成员 [英] How to access protected member

问题描述

我有以下扩展类型的代码(在F#中)，它调用从其继承的类的受保护方法(在C#中) 但我得到了例外(见下文).有解决方法吗?

I have following code in extending type (in F#) which invokes a protected method of a class it inherits from (in C#) but I get the exception (see below). Is there a workaround for this?

let getPagereference id =
    this.ConstructPageReference(id)

成员或对象构造函数'ConstructPageReference'无法访问.私有成员只能在声明类型内访问.受保护的成员只能从扩展类型访问，而不能从内部Lambda表达式访问.

更新:

我曾尝试关注但获得相同的结果

I have tried following but getting the same result

let getPagereference id =
    base.ConstructPageReference(id)

更新2(解决方案):

这是原来的代码:

type MyNewType() =
    inherit SomeAbstractType()

    let getPagereference id =
        base.ConstructPageReference(id)

    override this.SomeMethod()=
       let id = 0
       let pr = getPagereference id

这应该是这样的:

type MyNewType() =
    inherit SomeAbstractType()

    member this.ConstructPageReference(id) =
        base.ConstructPageReference(id)

    override this.SomeMethod()=
       let id = 0
       let pr = this.ConstructPageReference(id)

推荐答案

Gabe是正确的.您的代码:

Gabe is correct. Your code:

let getPagereference id =
  this.ConstructPageReference(id)

与

let getPagereference = fun id ->
  this.ConstructPageReference(id)

，因此您暗中尝试从lambda表达式内调用基本方法.您将需要从成员而不是让约束函数执行此操作.

and you are therefore implicitly attempting to call a base method from within a lambda expression. You will need to do this from a member, rather than a let-bound function.

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