Labview .Net interop assembly Entry point

[FredrikAlpner]

Hi!

I have an old working .Vi that is interfaceing with an old Philps industrial scale. It returns the weigt and displays this in a numeric "box". I now try to make use of this in a new VB.Net application that I´m working on but I could really need some help.

Image of theblock diagram:

The value is returned as a double "Aktuell vikt" and displayed in the text box and on the "tank".

I have set up my project build like this:

The full Method property, not showing completely in the pic, is this:

<Void>
<Name>returnvalue</Name>
</Void>
 Main()

I have tried to follow the tutorials that I could find on the forum for this, but without success..

This is my test calss in VB.net

Imports

NationalInstruments.LabVIEW.Interop

Imports

InteropAssembly.LabVIEWExports

　

Public

Class Form1

DeclareSub Main Lib"PhilipsPR1602.dll" (ByRef returnObject AsObject)

PrivateSub Button1_Click(sender AsObject, e AsEventArgs) HandlesButton1.Click

Dim value AsObject = Nothing

Main(value)

　

EndSub

End

Class

My guess it that this:

DeclareSub Main Lib"PhilipsPR1602.dll" (ByRef returnObject AsObject)

, is where I go wrong. Not really sure what I´m doing here right now so would appreciate all the help I can get!

The goal is to get hold of the "aktuell vikt" (i.e current weight) value in the vb applicaiton, and have that to act as a datasource for a tank control in measurment studio 2013.

BR /Fredrik

[FredrikAlpner]

Forgot: The error that I´m reciving when I run the sub, is: "Unable to find an entry point named 'Main' in DLL 'PhilipsPR1602.dll'."

[FredrikAlpner]

First issue solved,

I used the sub .vi instead and then I can select the parameter I want.

Still the error "cant find entry point  named ...*... in .dll ...*... " Can i be an issue with the instalation. I found a thread saying that the installed .net framework must be compatable with CLR 2.0, how do I find out if it is?