Calling a C#.Net dll Class within VB.Net - Basic Problem 1

[BDRichardson]

I would appreciate it if someone can resolve my basic problem with calling a Class from a C# dll, from within VB. I have created a very simple Class library within one Solution, and added a reference to it in a VB Project within another Solution. It would seem that I can call the parent class, but not the sub-class.

For example, I can write:

Dim CustomSubClass As New ParentClass()

But it will not accept:

Dim CustomSubClass As New ParentClass.SubClass()

All I want to do is make a custom class which I can reference in different projects. This particular one needs to take an input value, perform some simple manipulation, and return the new value.


C# Class:

// Ignore the underscores - Added for clarity
using System;
namespace CustomClasses
{
__public class ParentClass
__{
____public static string SubClass(string sValue)
____{
______// Some basic string manipulation code
______return sValue;
____}
__}
}

VB Class:

Imports CustomClasses
Public Class TestClass

__Dim CustomSubClass As New ParentClass.SubClass()

__Public Sub TestSub()
____Dim sNewValue As String
____sNewValue = CustomSubClass("OldValue")
____MsgBox("OldValue is now: " & sNewValue)
__End Sub

End Class

Please help me!

 

[AtomicChip]

Not sure I totally understand...

When you say add a reference, are you adding a reference to the compiled .dll, or are you adding the c# project to the vb solution?

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[chiph]

Internal classes (sub classes) are only visible to the containing class. If you want to create an instance of it, you'll have to add a method to the containing class to return a copy to your VB caller.

Chip H.


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[BDRichardson]

AtomicChip - Yes, I am referring to a compiled dll, and not adding it.

Chip H - Thanks for your feedback. Would you kindly elaborate, as I'm not entirely sure what you mean.

Thanks

 

[BDRichardson]

Thanks for your help guys. I have managed to resolve it now.