CODEWITHSUNDEEP
vb.netdlldllimport
Sharat Chandra
Sharat Chandra

Reputation: 4544

Why is one class not able to recognize the public member variable of another class

I have two classes as follows

    Public Class A_one     'This project does not have a dll generated even after a build. Any reason why ?
    Public Structure struct
        Dim xyz as String
        Dim p as String
    End Structure
    Public Sub xyz(...)
        ClassB_one_Obj = New ClassB_one_Obj(SampleStruct) 

        ClassB_one_Obj.send_struct(sampleStruct)   
    End Sub

    Public Class B_one       'In a different project 
    Public Sub send_struct(ByVal sampleStruct As A_one.struct)  'Throwing error here **"Type A_one.struct not defined"**

Can anybody explain why i'm getting the error. Is it because I have not added the dll reference of class A_one in Class B_one ? I tried to add the reference dll of A_one , but was not able to find it either in the obj/bin folders . Can anybody point me to a work around ?

EDIT/UPDATE : Figured that the class A_one which is the main executable creates objects of Class B_one and that is the reason we can't create an object of class A_one in B_one, since there is a deadlock-like situation.

Is it true that we can't create an object of the main class ( start-up class ) from another class ?

Upvotes: 0

Views: 1088

Answers (1)

Kratz
Kratz

Reputation: 4340

Yes, the error is because project B is not referencing project A, so it doesn't know anything about that type.

From withing Visual Studio, go to the properties of project B, References, Add. If project A is in the same solution as B, add it as as a Project/Solution reference, otherwise you can browse for the DLL. If you use the DLL method, you will have to ensure that the project type of project A is set to be a Class Library and that it has been successfully built. If its not set to be a Class Library project, it will most likely have built as an EXE file (you can add a reference to an EXE file as well, if you need project A to stay as a stand-alone executable).

Upvotes: 1

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