How to use ForgetRequestWillBeSent method of PuppeteerSharp.NetworkEventManager class

You can call EvaluateFunction passing that ElementHandle as an argument

var content = await Page.EvaluateFunctionAsync<string>("e => e.textContent", elementHandle);

If you have many scenarios like that, you can build an extension method to solve that for you ;)

EvaluateExpressionAsync won't return DOM elements. You should build a serialized output. For instance, a string[] with the review text.

var reviews = "Array.from(document.querySelectorAll('.comments-content')).map(r => r.innerText);";
var reviews = await page.EvaluateExpressionAsync<string[]>(reviews);
Console.WriteLine(reviews);

Use the below code it worked for me :

            // Initiating Browser configuration
            Console.WriteLine("Intiating Browser");
 
             Browser browser = (Browser)await Puppeteer.LaunchAsync(new LaunchOptions
            {
                Headless = false,
                ExecutablePath = @"C:\Program Files\Mozilla Firefox\firefox.exe",
                Product = Product.Firefox,
                UserDataDir = @"C:\Users\Nihao\AppData\Roaming\Mozilla\Firefox\Profiles\fp8f64bb.Mika",
                DefaultViewport = null,
                IgnoreHTTPSErrors = true,
                Args = new[] { "-wait-for-browser" }
            });

                
            // Loading url.
            Console.WriteLine("Navigating to the URL");
            Page page3 =(Page)await browser.NewPageAsync();
            page3.DefaultNavigationTimeout = 0;
            await page3.GoToAsync("https://whoer.net");

            // Fetching content from the page.
            Console.WriteLine("Fetching content in the URL.");
            var content = await page3.GetContentAsync();
            
            Console.WriteLine("Content fetching completed! ");

            // Closing Browser
            Console.WriteLine("Closing browser.");
            await browser.CloseAsync();

"TimeoutError: Timed out after 30000 ms while trying to connect to the browser! Only Chrome at revision r1056772 is guaranteed to work." might be an explanation, as of 12/2022. Tried on Chrome Portable and got this error, very similar to yours.

That's an array in the browser. If you want to get that array on your site, you can use the GetPropertiesAsync method. It should be something like this:

var properties = await elements.GetPropertiesAsync().ConfigureAwait(false);
var elementsArray = properties.Values.OfType<ElementHandle>().ToArray();

You need to mount them in container. https://flaviocopes.com/docker-access-files-outside-container/

You can wait for some selector that might tell you that the page is ready. e.g.:

await page.WaitForSelectorAsync(".someSelector");

So, after many tries and a lot of searched, I ended up switching to Selenium, which seems to have better documentation and a lot of examples here. This is the code, that worked for me:

string locator1 = "td:Contains(\'41818397111\')";
string locator2 = "td[id = \'InvoiceDetails\']";
IWebElement webElement = driver.FindElement(Selenium.WebDriver.Extensions.By.JQuerySelector(locator1).Parent().Find(locator2));
webElement.Click();

This code will load www.kayak.com with no images:

using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))
using (var page = await browser.NewPageAsync())
{
    await page.SetRequestInterceptionAsync(true);

    // disable images to download
    page.Request += (sender, e) =>
    {
        if (e.Request.ResourceType == ResourceType.Image)
            e.Request.AbortAsync();
        else
            e.Request.ContinueAsync();
    };
    await page.GoToAsync("https://www.kayak.com");
    Console.ReadLine();
}