SeleniumWebdriver - Driver finds element but cant work on it? - selenium

Question

I am trying to make a simple test to test the login form of a website. When I initialize the element Selenium finds it but if I try to click on it or check if its Displayed I either get an exception that the element is not visible or False for the Displayed.
The page: http://www.officemate.co.th/
My code:
IWebDriver driver = new ChromeDriver();
driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(10));
driver.Navigate().GoToUrl("http://www.officemate.co.th");
IWebElement openSignUp = driver.FindElement(By.CssSelector("body > div:nth-child(6) > div > div:nth-child(3) > ul > li.dropdown > a"));
openSignUp.Click();
IWebElement usernameField = driver.FindElement(By.Id("UserId"));
usernameField.SendKeys("SomeUser");
Console.WriteLine(usernameField.Displayed);

Answer 1

try following code. i have tested it is working fine.
try
{
ChromeDriver driver = new ChromeDriver(#"C:\Users\Muhammad USman\Downloads\chromedriver_win32");
driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(10));
//now i changed path for login.
driver.Navigate().GoToUrl("https://www.officemate.co.th/Account/Login");
//full specified xPath of eache element. is here whihc i'll use know.
//https://www.officemate.co.th/Account/Login
var email = #"/html/body/div[9]/div/fieldset/form/div[1]/div/input";
var password = #"/html/body/div[9]/div/fieldset/form/div[2]/div/input";
var check = #"/html/body/div[9]/div/fieldset/form/div[3]/div/input[1]";
var login = #"/html/body/div[9]/div/fieldset/form/div[4]/div/button";
IWebElement usernameField = driver.FindElement(By.XPath(email));
usernameField.Clear();
usernameField.SendKeys("SomeUser#gmail.com");
Console.WriteLine(usernameField.Displayed);
IWebElement pass = driver.FindElement(By.XPath(password));
pass.Clear();
pass.SendKeys("Some!password");
//Check box
var checkBox = driver.FindElement(By.XPath(check));
if (!checkBox.Selected)
{
checkBox.Click();
}
driver.FindElement(By.XPath(login)).Click();
if (driver.FindElements(By.XPath("/html/body/div[9]/div/fieldset/form/div[1]/p")).Count > 0)
{
//invalid login error message
var errorMessage = driver.FindElement(By.XPath("/html/body/div[9]/div/fieldset/form/div[1]/p")).Text;
}
}
catch (Exception exp)
{
throw;
}
if any issue then let me know.
Thanks.