.Net input parameter

[El_Frito]

I've built a Labview interop assembly from a project, and I need to pass in a .Net object to a VI as an input parameter. I'm calling it from C# code, and the metadata shows the function needs an 'LVReferenceNumber' type to represent the .Net reference. I can't figure out how to create this structure from my .Net object.

Example (this would create a .Net object and pass it into a VI call):

MyObject Obj = new MyObject();NationalInstruments.LabVIEW.Interop.LVReferenceNumber lvRef = (LVReferenceNumber)Obj;MyInteropAssembly.LabVIEWExports.MyVI(lvRef);

Obviously the cast does not work--does anyone know how to create this LVReferenceNumber from my .Net object?

Thanks

[Ton Plomp]

I haven't tried it but should it be like:

MyObject Obj = new LVReferenceNumber();

Ton

[PeterB]

El_Frito,

Unfortunately NI haven't properly implemented the marshalling code required to pass a reference to a .NET object into LabVIEW land. Refer to this post which summarises things. Adam Kemp is raising a CAR for it.

rgds

Peter Badcock

Product Development

ResMed Ltd

I've built a Labview interop assembly from a project, and I need to pass in a .Net object to a VI as an input parameter. I'm calling it from C# code, and the metadata shows the function needs an 'LVReferenceNumber' type to represent the .Net reference. I can't figure out how to create this structure from my .Net object.

Example (this would create a .Net object and pass it into a VI call):

MyObject Obj = new MyObject();NationalInstruments.LabVIEW.Interop.LVReferenceNumber lvRef = (LVReferenceNumber)Obj;MyInteropAssembly.LabVIEWExports.MyVI(lvRef);

Obviously the cast does not work--does anyone know how to create this LVReferenceNumber from my .Net object?

Thanks