Develop Reference

Selenium - How to hide command prompt window

I am trying to hide command prompt window when starting selenium chrome, but I can't figure it out.
Here is my code:
var driverService = ChromeDriverService.CreateDefaultService();
driverService.HideCommandPromptWindow = true;
var chromeOptions = new ChromeOptions();
chromeOptions.AddArguments("--headless");
var browser = new ChromeDriver(driverService, chromeOptions);
But it crash on: System.InvalidOperationException: 'session not created: This version of ChromeDriver only supports Chrome version 85
I tried to manually add path to driver but It crash's also.
Different code I used
var driverService = ChromeDriverService.CreateDefaultService();
driverService.HideCommandPromptWindow = true;
var chromeOptions = new ChromeOptions();
chromeOptions.AddArguments("--headless");
chromeOptions.BinaryLocation = "C:\\Users\\TriX\\Downloads\\chromedriver_win32";
var browser = new ChromeDriver(driverService, chromeOptions)
Now it crash on: OpenQA.Selenium.WebDriverException: 'unknown error: Failed to create Chrome process.'
Thanks for help I am completely lost :(
I tried different codes as shown, but without success.

Thanks to #r000bin i managed to resolve the problem. I also find out that I installed outdated version of ChromeDriver. So, I downloaded the correct one and it started to work.
I had old ChromeDrive nuget version
Downloaded the new one and uninstalled old one
Started to work :)

Selenium - Launch Edge Chromium as different user

I have a requirement to switch from chrome to edge driver chromium
I am having issues trying to launch the browser as a different user. We need to open the browser with different users who have different roles and validate
To manually do this you would right click edge browser > shift and click Microsoft edge > Run as different user
I am using the following NuGet Packages:
MicrosoftEdge.SeleniumTools 3.141.2
Selenium.Webdriver 3.141.0
Microsoft Edge version
91.0.864.54
Previously with using chrome and the package Selenium.Chrome.Webdriver i was able to use the following
service.StartupDomain = ""
service.StartupUserName = ""
service.StartupPassword = ""
service.StartupLoadUserProfile = true;
However with MicrosoftEdge.SeleniumTools 3.141.2 i am unable to find a similar solutions. Does anyone know an equivalent solution?
Current code below
EdgeDriverService service = EdgeDriverService.CreateChromiumService(driverpath, msedgedriverExe);
var edgeOptions = new EdgeOptions();
edgeOptions.UseChromium = true;
service. ???
edgeOptions. ???
IWebDriver driver = new EdgeDriver(service, options)

ChromeDriver v90 does not give correct URL when connecting to remote-debugging port through the ChromeDriverService

We use ChromeDriver in C# to connect to existing instances of Chrome that have the remote debugging port 9222 set. Here is how we connect:
var svc = ChromeDriverService.CreateDefaultService(path);
ChromeOptions options = new ChromeOptions();
options.DebuggerAddress = "127.0.0.1:9222";
var driver = new ChromeDriver(svc, options);
var url = driver.Url;
The problem is that the value of driver.Url is not what it used to be when using ChromeDriver version 88.
At that point and all earlier versions, driver.Url was the value of the URL for the current active tab in Chrome. So if Chrome had five tabs open and tab 4 is active, the Url was that of tab 4. And that made sense.
Once we upgraded to version 90 that is no longer the case. It appears that the value of Url is... well it's not clear. Sometimes the last active tab, sometimes some other tab, sometimes the first. I do not see a pattern.
Is this an error in ChromeDriver? In the past, whatever was the active tab was the one that driver.Url yielded. Now it's indeterminate which wreaks havoc with our code.
Update: If I have two tabs open, then the driver.Url and driver.Title are for the tab that was just prior active. So always the other tab. With 3 tabs it may be the 2nd to the last active tab. This feels like a off-by-one error within an internal array of tabs.

I had the same problem. I solved it using the method suggested here
ChromeDriverService driverService =
ChromeDriverService.CreateDefaultService();
var options = new ChromeOptions();
options.DebuggerAddress = "127.0.0.1:9222";
var driver = new ChromeDriver(driverService, options);
driver.SwitchTo().Window(driver.WindowHandles[0]); // Switch to the recently opened tab
MessageBox.Show("driver.Url: " + driver.Url);

Selenium geckodriver executes findElement 10 times slower than chromedriver (.Net)

Sorry didn't find a similar question and maybe somebody can help.
Due to additional requirements we have to test our project not only with Chrome but with Firefox as well. When we simply changed a test context to Firefox it turned out that all calls of findElement took 10 times more time than with Chrome. All tests are completely ruined. We tried to use different test machines but the results are the same. The project is on Core .Net. For testing we use MSTest V2, Firefox 63 (64 bit) and Geckodriver 0.22 (64 bit) .
Very appreciate any help.

By referring to the previous answer, my issue was solved by below code.
string geckoDriverDirectory = "Path of geckodriver.exe"
FirefoxDriverService geckoService =
FirefoxDriverService.CreateDefaultService(geckoDriverDirectory);
geckoService.Host = "::1";
var firefoxOptions = new FirefoxOptions();
firefoxOptions.AcceptInsecureCertificates = true;
Driver = new FirefoxDriver(geckoService, firefoxOptions);

Yep. You’re definitely hitting the performance issue that is part of .NET Core. It doesn’t happen on Chrome, IE, or Edge, because the driver executables for each of those browsers (unlike geckodriver) listen on both the IPv4 and IPv6 loopback addresses. If you were to specify “::1” as the host for geckodriver with .NET, the problem would disappear.
Refer to https://github.com/SeleniumHQ/selenium/issues/6597

A complete .Net Core webdriver for Firefox 7/14/2020:
// .Net Core workaround #1: Slow Firefox webdriver
string projectFolder = Directory.GetParent(Directory.GetCurrentDirectory()).FullName;
string geckoDriverDirectory = projectFolder + "\\netcoreapp3.1\\";
FirefoxDriverService geckoService =
FirefoxDriverService.CreateDefaultService(geckoDriverDirectory);
geckoService.Host = "::1";
var ffOptions = new FirefoxOptions();
ffOptions.BrowserExecutableLocation = #"C:\Program Files\Mozilla Firefox\Firefox.exe";
ffOptions.AcceptInsecureCertificates = true;
// This profile will by-pass *ALL* credentials. Note that Chrome uses Internet Explorer settings, so it does not need this.
// You must pre-setup the profile, by launching Firefox and doing phone authentication
// The profile's location is: C:\Users\<windows logon>\AppData\Local\Mozilla\Firefox\Profiles
// Without this, if your AUT uses SSO, you will always get prompted for the PIN or Two factor authentication
FirefoxProfile profile = new FirefoxProfileManager().GetProfile("Selenium");
ffOptions.Profile = profile;
// DotNet Core workaround #2- Code page
// https://stackoverflow.com/questions/56802715/firefoxwebdriver-no-data-is-available-for-encoding-437
// https://stackoverflow.com/questions/50858209/system-notsupportedexception-no-data-is-available-for-encoding-1252
CodePagesEncodingProvider.Instance.GetEncoding(437);
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
_driver = new FirefoxDriver(geckoService, ffOptions);

In case anyone is trying gary.zhang's answer in Javascript, it looks like this:
let driver = new Builder()
.forBrowser('firefox')
.setFirefoxService(new firefox.ServiceBuilder('path_to_driver', host='::1'))
.setFirefoxOptions(new firefox.Options().headless())
.build();
Took me a bit of staring at it to figure out how to convert the syntax.

Selenium-WebDriver opened the new Firefox window, but didn’t navigate to URL

My source code is copied from selenium docs site. I didn’t make any change.
http://docs.seleniumhq.org/docs/03_webdriver.jsp#user-input-filling-in-forms
I installed Selenium library via NuGet, including
Selenium Remote Control(RC), Selenium WebDriver Mono, Selenium WebDriver Support Classes, Selenium WebDriver, and Selenium WebDriver-backed Selenium.
When I run this code, a new Firefox window was opened. But the Firefox doesn’t navigate to the URL, it just stuck, nothing was loaded.
I tried the Firefox v27, v29, v30 and v31, none of them worked.
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
// Requires reference to WebDriver.Support.dll
using OpenQA.Selenium.Support.UI;
class GoogleSuggest
{
static void Main(string[] args)
{
// Create a new instance of the Firefox driver.
// Notice that the remainder of the code relies on the interface,
// not the implementation.
// Further note that other drivers (InternetExplorerDriver,
// ChromeDriver, etc.) will require further configuration
// before this example will work. See the wiki pages for the
// individual drivers at http://code.google.com/p/selenium/wiki
// for further information.
IWebDriver driver = new FirefoxDriver();
//Notice navigation is slightly different than the Java version
//This is because 'get' is a keyword in C#
driver.Navigate().GoToUrl("http://www.google.com/");
// Find the text input element by its name
IWebElement query = driver.FindElement(By.Name("q"));
// Enter something to search for
query.SendKeys("Cheese");
// Now submit the form. WebDriver will find the form for us from the element
query.Submit();
// Google's search is rendered dynamically with JavaScript.
// Wait for the page to load, timeout after 10 seconds
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
wait.Until((d) => { return d.Title.ToLower().StartsWith("cheese"); });
// Should see: "Cheese - Google Search"
System.Console.WriteLine("Page title is: " + driver.Title);
//Close the browser
driver.Quit();
}
}

I have had the same problem. the solution is simply uninstall your current firefox browser and download older version "i tried 2010 version 3.6.10 works great". your code is fine the problem is Mozilla people have decided to not give the right to any third party application to control Firefox.
good luck