using System;

using OpenQA.Selenium;

public class Program

{

    public HomePage HomePage => new HomePage(InitializeBrowser());

        private static IWebDriver InitializeBrowser()

        {

            var options = new EdgeOptions();

            options.BinaryLocation = @"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe";

            var driver = new EdgeDriver(@"C:\msedgedriver", options, TimeSpan.FromHours(1));

            driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(3);

            return driver;

        }

    public static void Main()

    {

            var company = new Company{FirstName = "" , LastName = ""};

            var x = HomePage

                 .If(IsDriverFound(company), b => b.FillPostingInformationForm(company))

                 .If(!IsDriverFound(company), b => b

                 .GoToDriversPage());

    }

}

public class BasePage

{

        public IWebDriver WebDriver { get; set; }

​

        public BasePage(IWebDriver webDriver)

        {

            WebDriver = webDriver;

        }

}

public class HomePage: BasePage

{

        private Select2 Driver => new Select2(WebDriver, WebDriver.FindElement(By.XPath("xpath")));

​

        private IWebElement FirstName => WebDriver.FindElement(By.XPath("xpath"));

​

        private IWebElement LastName => WebDriver.FindElement(By.XPath("xpath"));

        public HomePage(IWebDriver webDriver) : base(webDriver)

        {

        }

        public HomePage FillPostingInformationForm(Company company)

        {

            FirstName.SendKeys(company.FirstName);

            LastName.SendKeys(company.LastName);

            return new HomePage(WebDriver);

        }

        public HomePage IsDriverFound(Company company)

        {

            Driver.IsItemSelected(company.FirstName + " " + company.LastName);

            return new HomePage(WebDriver);

        }

        public HomePage GoToDriversPage(){

            return new HomePage(WebDriver);

        }

}

public class BaseElement

{

        public IWebDriver WebDriver { get; set; }

        public BaseElement(IWebDriver webDriver)

        {

            WebDriver = webDriver;

        }

    }

public class Select2 : BaseElement

{

        public IWebElement _element;

​

        public Select2(IWebDriver webDriver, IWebElement element) : base(webDriver)

        {

            _element = element;

        }

        public bool IsItemSelected(string keyWord)

        {

            try

            {

                _element.Click();

                _element.SendKeys(keyWord);

                var option = WebDriver.FindElement(By.XPath(string.Format("//*[@{0} = '{1}']",

                                                "role", "option")));

                option.Click();

                return true;

            }

            catch (NoSuchElementException ex)

            {

                Console.WriteLine(ex.Message);

               return false;

            }

        }

}

public static class BuilderExtensions

{

        public static T If<T>(this T t,bool cond, Func<T, T> builder)

          where T : HomePage

        {

            if (cond)

                return builder(t);

            return t;

        }

}

public class Company{

    public string FirstName { get; set; }

    public string LastName { get; set; }

}