Import wcf web service in Labview 2016?

[Ola_A]

I've heard that the import web service tool in earlier labview does not work for wcf (Windows Communication Foundation) web services. Is there any improvement or workaround for Labview 2016?

[PWoodward]

Hi Ola_A,

I had a quick look in the release notes of 2016 and it doesn't look like it mentions changes to the web services import tool so I would assume it does not have any improved use with WCF web services. However I don't have a URL to try it on so cannot confirm this.

With regards to work arounds, people have found them, some of the following links should help you out.

http://forums.ni.com/t5/LabVIEW/LabVIEW-and-WCF-web-service-Why-so-difficult/td-p/1731812

http://forums.ni.com/t5/LabVIEW/WCF-web-services-with-LabVIEW/td-p/1605832

Cheers

Pete

[Ola_A]

Thanks PWoodward, I will try to import a wcf web service when I have one available and see what happens, but I don't give much hope that it will be easy!

[Ola_A]

Ok, outcome of the Import web service tool in Labview 2015 & 2016. I add an address to a wsdl file, + username & password, and the import works. So I get three vi's Open web service, Close web service and one for a web service method that does some work. So far so good!

When I test run the three vi's in a simple test application the Open web service gives no error, but the payload method waits for some 30+ seconds and give the error 1172

Invoke Node System.Reflection.TargetInvocationException: Ett undantagsfel har inträffat i målet för en aktivering.
	Inner Exception: System.Net.WebException: Åtgärdens tidsgräns har överskridits <append><b>System.Net.WebException</b> in safebinding.lvlib:

Maybe this is due to the input data to the method, the import tool parses the wdsl file and creates a cluster with correct data types, apart from one which could be descibed as an array of a cluster. What I get is an array of a .NET class safebinding.<arrayname from wsdl>.

Is there an easy way for me to construct the input data to my method so I can test run the vi?

I have no clue to if I should try to put my real test data into the .NET class or construct a new cluster that describes the data, and somehow get the web service vi to accept that.

[Ola_A]

So folk, sorry for reporting that the Import/ Web service... tool did not work for a simpler wcf web service either!

Same as before, the import is ok, give three VI's, Open Action and Close. Open runs fine, but Action gives timeout errorafter about a minute.

Error 1172
Invoke Node System.Reflection.TargetInvocationException: Ett undantagsfel har inträffat i målet för en aktivering.
	Inner Exception: System.Net.WebException: "The time limit is exceeded" ...

This was in Labview 2015.

So I guess there is no quick way to access wcf web services in Labview yet.