http post string

[LawrenceChong]

Here is an example of Post.vi in LabVIEW:

https://www.ni.com/docs/en-US/bundle/labview/page/using-the-post-http-method-real-time-windows.html

How can I use the "http post string" in LabVIEW Web UI Builder to do the same thing?

[Julianne_K]

Hi Lawrence,

The HTTP Post String function can be use in a very similar manner to the Post VI in LabVIEW. A similar example is shown below:

Sincerely,

[LawrenceChong]

I have tried the example but does not work , I can receive the response body but I can't set x = 3 &  y = 2 , the sum I get is  zero.

[MarkBlack]

Hi Lawrence, 

Please post your LabVIEW web service code (in VI snippet if possible). 

[Julianne_K]

Hi Lawrence, 

There may be a problem with your web service. I would recommend that you review the Getting Started Tutorials on using web services and Web UI Builder. The links are provided below: 

Tutorial: Building and Accessing a LabVIEW Web Service Application (ETS, VxWorks, Windows) - this demonstrated how to use build the add web service

Getting Started with the LabVIEW Web UI Builder, Part 1: Creating and Running a VI 

[malcolmsmith]

It's probably worth mentioning that if you want to call LabVIEW web services that have a small number of inputs (and if the inputs are strings, the length is reasonably short), the easiest way to do this is is with the Import Web Service feature in UI Builder. (And the LabVIEW web methods would be configured as Terminal Mode / XML format in this case).