Is It Possible to Extract a Hidden Document Value from a Web Browser Using IWebBrowser2 in LabVIEW?

After hours of combing through the internet, I've come up empty-handed in my quest to find information related to my current project. I've created an HTML document that gathers user data and stores it in a JavaScript array. This array is then combined and saved as a hidden string within the document. Initially, I planned to transfer this string to a C# program, but I have since switched to using LabVIEW.

In my C# project, I was able to achieve my goal with just two simple lines of code:

System.Windows.Forms.HtmlElement hidden = webBrowser1.Document.GetElementById("hiddenfield1");
List<latlng> data = formharvest.extract(hidden.GetAttribute("value"));

However, I am now facing difficulties accessing the data stored in the hidden document. In my VI, I am using the IWebBrowser2 block to embed my HTML code. Any assistance on how to proceed with this would be greatly appreciated. Thank you for your help!

javascript.netformslabview

Answer №1

One approach could be setting up a web server within your LabVIEW program to host your HTML form. It seems like it would be quite feasible to then collect the form data, although I have not personally attempted this myself.

Check out this interesting thread for further insights and sample code.

Answer №2

It appears that you are attempting to integrate an HTML-rendering engine into a Windows form in the C# code above, but I'm not entirely clear on your intentions.

Although it is possible to incorporate .NET into your LabView code, you may want to consider a different approach, as suggested by CharlesB. This could involve a more traditional setup where a server delivers HTML to a web browser, which then interacts with the server via HTTP GET or POST requests.

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