How to use OnProcessExited method of PuppeteerSharp.States.ChromiumStartingState class

You can use the ClickOptions argument:

await page.ClickAsync(
    "[class*='_16aPYHYIOVxzNYTA4BGnwS NJVykX0WljoRws2qTYI5G _3FwRpWCSns-2PgbiDhEErG']", 
    new ClickOptions() { Button = MouseButton.Right } );

You have to be careful with your domain property. If it's not valid, it will be ignored. For what I see there. You might be setting something like http://www.yourdomain.com, when yourdomain.com is expected.

Although there are still many improvements going on, Puppeteer-Sharp is thread-safe. To improve loading performance, there are a few approaches you can take.

Launch one browser and then connect to it

You can launch one (real) browser and then use the ConnectAsync method to connect to it.

await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
var browser = await Puppeteer.LaunchAsync(new LaunchOptions
{
    Headless = false,
});

var theBrowser1 = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = browser.WebSocketEndpoint });
var theBrowser2 = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = browser.WebSocketEndpoint });
var page1 = await theBrowser1.NewPageAsync();
var page2 = await theBrowser2.NewPageAsync();

await Task.WhenAll(
    page1.GoToAsync("https://www.stackoverflow.com"),
    page2.GoToAsync("https://serverfault.com/")
);

I know that code is not running in parallel, but you'll get the idea about reusing the same browser.

Create new pages on the same browser

If you are using TPL, you shouldn't have any issues creating new pages from different threads using the same browser.

await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);
var browser = await Puppeteer.LaunchAsync(new LaunchOptions
{
    Headless = false,
});

var urls = new string[]
{
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com",
    "https://www.stackoverflow.com"
};

await Task.WhenAll(
    urls.Select(url => Task.Factory.StartNew(async () =>
    {
        var page = await browser.NewPageAsync();
        return page.GoToAsync(url);
    })));

Again, this example is just to give you an idea of how this could be accomplished.

Pages queue

There is one user who created a queue of X pages (for x from 0 to X => NewPage) and then he would grab pages from that queue. You can see the example here.

First, the evaluate function won't get what you write in the console.log. You need to return something. As you are waiting for an event you can return a promise and resolve that promise inside the event.

page.EvaluateFunctionAsync<Point>(@"() => {
  return new Promise(resolve => {
    document.onmousemove = function(e){
      mouseX = e.offsetX;
      mouseY = e.offsetY;
      resolve({x: mouseX, y: mouseY});
    };
  });
}");

using below,

using var page = browser.NewPageAsync().Result;

page.TypeAsync("input[name='elementname']", valuetobeset).Wait();

I think EvaluateFunctionAsync is the most straight forward way to do this:

var type = await node.EvaluateFunctionAsync<string>("node => node.type");

I think EvaluateFunctionAsync is the most straight forward way to do this:

var type = await node.EvaluateFunctionAsync<string>("node => node.type");

You might not be able to access to https://storage.googleapis.com/chromium-browser-snapshots/Win_x64/674921/chrome-win.zip.
If you can't access to that URL, you can try to download a Chromium 77 (or greater) manually, and use the ExecutablePath property to set the Chromium app location.

PuppeteerSharp doesn't have those APIs (because Pupppeteer doesn't have them). But, you could try sending those messages to the browser in the same way TapAsync does.

This is the TapAsync code:

// Touches appear to be lost during the first frame after navigation.
// This waits a frame before sending the tap.
// @see https://crbug.com/613219
await _client.SendAsync("Runtime.evaluate", new RuntimeEvaluateRequest
{
    Expression = "new Promise(x => requestAnimationFrame(() => requestAnimationFrame(x)))",
    AwaitPromise = true
}).ConfigureAwait(false);

var touchPoints = new[] { new TouchPoint { X = Math.Round(x), Y = Math.Round(y) } };
await _client.SendAsync("Input.dispatchTouchEvent", new InputDispatchTouchEventRequest
{
    Type = "touchStart",
    TouchPoints = touchPoints,
    Modifiers = _keyboard.Modifiers
}).ConfigureAwait(false);

await _client.SendAsync("Input.dispatchTouchEvent", new InputDispatchTouchEventRequest
{
    Type = "touchEnd",
    TouchPoints = Array.Empty<TouchPoint>(),
    Modifiers = _keyboard.Modifiers
}).ConfigureAwait(false);

Page has a public property Client. You can use that Client to perform these calls.

As you can check here, Type supports: touchStart, touchEnd, touchMove and touchCancel.