CODEWITHSUNDEEP
c#labview
Nemanja Vidačković
Nemanja Vidačković

Reputation: 73

How do i pass a control(Button,...) reference from Labview to C#(VisualStudio)

i have a button on my FrontPanel in LabView. I created a DLL in VisualStudio that i would like to use in Labview to get the coordinates of that button.

    public void GetCoords(Control ctr, out Point p)
    {
        Point location = ctr.PointToScreen(Point.Empty);
        p = location;
    }

My GetCoords method uses a "Control" input parameter which is my button in LabView. When i link my button reference from Labview to the method from C# using the DLL i get an error that my reference from my control in labview is not a .NET reference. And yes, its not a .NET control, but what do i use in C# instead of "Control" parameter so i can input my labview control?

So is there any other way to send my Labview button reference to the C# DLL ?

Thanks

Upvotes: 1

Views: 310

Answers (2)

ShockHouse
ShockHouse

Reputation: 11

I don't think the way you want to do it is the best way. If you want the coordinates of the control, just get those coordinates in LabVIEW.

Look at this article: https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019S7gSAE&l=en-US

IF you need to you can then pass the specific coordinates to the C# code. But the C# code does not need your control reference.

Upvotes: 1

srm
srm

Reputation: 3163

There is no direct mechanism. You would need to pass the control ref to your C# code, then have the C# code call back into LabVIEW to do operations. It works best if your G code* is a DLL and the C# code calls in to get the ref and then calls in again to get info about the ref. If you try to have G call out to C#, and then want the C# to call back, it’s really complicated to structure.

*G=graphical

Upvotes: 0

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