Calling Unmanaged DLL from VB

Question

I'm having some trouble finding the syntax for making function calls to unmanaged DLLs in VB.NET. Is anyone familiar with this?

Let's just assume there's a function "Connected" in unmanaged DLL "Connector.DLL". I want to call this function by creating an abstract function call to it.

I've seen some code out there that looks something like

[DllImport("Connector.DLL")]
Public Shared Function Connect(ByVal intPort)

But that syntax doesn't work for me.

Answer 1

Have you checked out pinvoke.net?

Answer 2

In Visual Studio, add a reference to this Dll.

In Code:

Dim vr as new COMDllClass()
vr.FunctionInDll()

EDIT per comment:

Try this code:

<DllImport("Connector.DLL")> _
Public Shared Function Connect(ByVal intPort)