page.objects.cs

public class HomePage
{
    private readonly IWebDriver webDriver;

    public HomePage(IWebDriver webDriver)
    {
        this.webDriver = webDriver;
    }

    public LoginPage ClickLoginLink()
    {
        var loginLink = webDriver.FindElement(By.Id("LoginLink"));
        loginLink.Click();
        return new LoginPage(webDriver);
    }

    public bool IsLoggedIn()
    {
        return webDriver.FindElement(By.Id("LogoutLink")).Displayed;
    }
}

public class LoginPage
{
    private readonly IWebDriver webDriver;

    public LoginPage(IWebDriver webDriver)
    {
        this.webDriver = webDriver;
    }

    public void EnterUsername(string username)
    {
        webDriver.FindElement(By.Id("Username")).SendKeys(username);
    }

    public void EnterPassword(string password)
    {
        webDriver.FindElement(By.Id("Password")).SendKeys(password);
    }

    public void ClickLogin()
    {
        webDriver.FindElement(By.Id("Login")).Click();
    }
}