无法访问 DLL 中的方法 [英] Can't access methods in DLL

问题描述

使用 asp.net/vb.net.创建了一个包含 2 个项目的解决方案，MainProject"和MyCommonStuff".第二个项目(MyCommonStuff")实际上是一个通用的实用程序类，我希望生成的 dll 也用于其他项目.

Using asp.net/vb.net. Created a solution with 2 projects, "MainProject" and "MyCommonStuff". The 2nd project ("MyCommonStuff") is really a common utilities class, the resulting dll I hope to use for other projects as well.

MyCommonStuff 的定义非常简单......

MyCommonStuff is defined very simply....

Public Class MyCommonStuff Stuff
    Public Shared Function GetInfo() as string
         :
         :
    End Function
    Public Shared Sub Test
         :
         :
    End Sub
    :
End Class

在 MainProject 中，我设置了对此 MyCommonStuff 项目的引用.

In MainProject I set a reference to this MyCommonStuff project.

我想在我的代码中访问一些 MyCommonStuff 方法.但由于某种原因，这些方法未被识别.

I want to access some of the MyCommonStuff methods in my code. But for some reason the methods are not being recognized.

例如，在 MainProject 中的一个按钮中，我尝试了这个....

For example, in a button in the MainProject I tried this....

dim m as new MyCommonStuff 
x = m.GetInfo()

Intellisense 不会为 m 获取任何子/功能.我究竟做错了什么?谢谢！

Intellisense doesn't pick up any of the subs/functions for m. What am I doing wrong? Thanks!

推荐答案

问题是您已将方法设为静态(在 VB 中为共享").您需要要么删除Shared关键字:

The thing is that you've made your methods static ("Shared" in VB). You need to either remove the Shared keywords:

Public Function GetInfo() As String
     ':
     ':
End Function

Public Sub Test()
     ':
     ':
End Sub

或保留 Shared 关键字并像这样使用它:

or keep the Shared keywords and use it like this:

x = MyCommonStuff.GetInfo()

这里有一些关于共享成员.最值得注意的是:

Here is some information about Shared members. Most notably:

指定一个或多个声明的编程元素是与整个类或结构相关联，而不是与特定的类或结构的实例.

Specifies that one or more declared programming elements are associated with a class or structure at large, and not with a specific instance of the class or structure.

换句话说，如果您想从 MyCommonStuff 类的 实例 中使用您的方法，例如m 在 m.GetInfo() 中，您需要关闭 Shared 关键字.另一方面，如果您有一个在您的类的所有实例中通用的方法，或者您甚至不需要实例，您将使用Shared 关键字并像我上面说的那样访问方法，例如MyCommonStuff.GetInfo().

In other words, if you want to use your methods from an instance of your MyCommonStuff class, e.g. m in m.GetInfo(), you need to leave the Shared keyword off. If, on the other hand, you have a method that is common across all instances of your class or for which you don't even need an instance, you would use the Shared keyword and access the method like I said above, e.g. MyCommonStuff.GetInfo().

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