Programmatically click a button on a PDF XFA form using itext - java

I have a PDF xfa form that I am filling out with iText. I am unable to fill certain fields as they become enabled in the form only after clicking on a certain button within the form. This button actually calls a webservice that returns data. The data is used to fill up other fields which I am not bothered with. But only after clicking this button the fields that I am trying to fill out with XML data become enabled (non read only). I can't change the form.
So I am guessing the only way I can fill out these fields by merging the XML data is by clicking this button. Is there a way I can click this button using Itext and then merge the pdf with the xml data I am sending it?

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Access hidden HTML tags before user interaction

I have a website that whenever user clicks on this button, the website will display a data table and the tag for that will appear in the inspection tool. I want to retrieve this data table information via the HTML content when I scrape this website. However, the URL stays the same no matter the button is clicked or not. Technically I can't get the content with just the URL because it will open the website content when the button is not clicked (or no table displayed). I'm coding in Java. How can I get around this?
My example:
Here there are two div tags with the exact same class name "sKfxWe-BeDmAc sKfxWe-BeDmAc-AHe6Kc" with two same child div tags, but their contents are different. The thing is the second div tag only appears when I click a button on the page -- basically it renders a different content. The fact that the URL stays the same and the second div tag isn't there when the page's first rendered make it hard for me to get its content.

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how to reset radio field option of pdf form using pdfbox java

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Filling out a web form automatically with a text file

I request a web page in the browser and I should fill out the text boxes it has. They are too many text boxes and it takes too mush time too fill them and the result of this latency is an expired page. I have written those inputs in a text file (each line for each text box). I want to write a program that when it is running, it fills out the form and I just click the submit button of the website.
The form is something like the following image:
I have a form which somehow looks like the following image:
I searched a lot to find a way to fill out the text boxes automatically in C# but did not find anything. My question is that is there anyway to set the values of these text boxes in C# and send them back to server?
You can write a json object, then a javascript function that iterate that json and figure out by each value the selector of the correct input to use and set the correct value.
Then when the page open, use the dev console.
paste the json object, paste the function.
Run the function and the form should get fill out.
=)

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