How Can I call to VI from VisualBasic

[Jaime3201]

I have a aplications in Visual Basic and need to call a Vi make in Labview with Data Acquisition

[Elton Wells]

You can do this via LabVIEW's automation interface. In Visual Basic, go to the Project menu, then References, then check the item for LabVIEW 7.0 Type Library (or another version if you don't have LabVIEW 7.0). In your application, you can get to the VI like this:

Dim lv As LabVIEW.Application
Set lv = New LabVIEW.Application

Dim path As String
' Set path to the path of the vi that you want to run.

Dim vi As VirtualInstrument
Set vi = lv.GetVIReference(path)

There are several properties that you can set on the VI and you can set values on the controls on the front panel via the SetControlValue method. Ultimately, once you have everything set up, you can run the VI via the Run method.

- Elton

[Jaime3201]

When executing this code appears the following Error.Procedure or function nondefined (lvGetVIReference)

[Elton Wells]

Your comment says lvGetVIReference. Is that correct or was that a typo? If that is correct, the problem is that you need a period between lv and GetVIReference (lv.GetVIReference).

- Elton

[Jaime3201]

When doing this opens the frontal panel of labview. I only want to call to the feasible