Update Data without refreshing whole browser

Question

Hey :)

I'm pretty new to C#, but I decided to start a little project to understand the way of C#!

So, I want to get some data from the html file of a webpage. I'm currently doing that with the following method:

 private string[] GetRessources()
        {
            string[] ressources = new string[3];
            
                ressources[0] = browser.Document.GetElementById("res1").InnerHtml.;
                ressources[1] = browser.Document.GetElementById("res2").InnerHtml;
                ressources[2] = browser.Document.GetElementById("res3").InnerHtml;
            
            return ressources;
        }

after running the method, I'm actually getting those ressources!
But on the real webpage, the ressources are refreshing every second. In my program they aren't!
Can I somehow repeat the method every second? I've tried to put the code lines 5-7 in an endless while-loop, but that causes my program to "not response", logically ^^.

If you told me any method to check for a change and update those ressources if there were, without letting the program cash, i'd be very thankfull! I'm having this problem with some other methods, too.

thanks! Basti