2

Error - Not Visible Exception Was UnhandledError - No Such Element Exception

Here is the code. I have attached the image of the error message:

using System;
using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using System.Text;
using System.Threading.Tasks;

namespace BBC_W_FCast_New_01
{
    class Program
    {
        static void Main(string[] args)
        {
            //Instantiate Firefox Driver
            var driver = new FirefoxDriver();
            driver.Navigate().GoToUrl("http://www.bbc.co.uk/weather");

            //Using the 'Find a Forecast' search field to get the weather in 'Reading, UK'
            var user = driver.FindElement(By.Id("locator-form-search"));

            //Use "Reading, Reading" to avoid ambiguity. There is a location called Reading in USA
            user.SendKeys("Reading, Reading");

            //Click on Search button
            driver.FindElement(By.Id("locator-form-submit")).Click();

            driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(10));

            //Click on Table button
            driver.FindElement(By.XPath(".//*[@id='hourly']/div[3]/table/tfoot/tr[3]/td[10]")).Click();

            //Obtaining pressure For 2100 hours today
            driver.FindElement(By.XPath(".//*[@id='hourly']/div[3]/table/tfoot/tr[3]/td[10]")).Click();

            //Obtain pressure for 2100 Hours tomorrow
            driver.FindElement(By.XPath(".//*[@id='hourly']/div[3]/table/tfoot/tr[3]/td[16]")).Click();

            //Subtract the two values above and then 'echo' the result in Selenium
            int val1 = Int32.Parse(driver.FindElement(By.XPath(".//*[@id='hourly']/div[3]/table/tfoot/tr[3]/td[16]")).Text);
            int val2 = Int32.Parse(driver.FindElement(By.XPath(".//*[@id='hourly']/div[3]/table/tfoot/tr[3]/td[10]")).Text);

            int difference = val1 - val2;
System.Console.WriteLine("Difference is: " + difference);

In Java & they do not offer good enough answers:


I get an error message on adding this code:

WebDriverWait wait = new WebDriverWait(driver, 30);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("locator")));

I have added an internal class. But I am getting the error:

"An unhandled exception of type 'System.NotImplementedException' occurred in BBC_W_FCast_New_01.exe Additional information: The method or operation is not implemented."

The error comes from this particular line of code:

throw new NotImplementedException();

Here is the class:

internal class WebDriverWait
{
    private FirefoxDriver driver;
    private TimeSpan timeSpan;

    public WebDriverWait(FirefoxDriver driver, TimeSpan timeSpan)
    {
        this.driver = driver;
        this.timeSpan = timeSpan;
    }

    internal IWebElement Until(object p)
    {
        throw new NotImplementedException();
    }
}

}

2
  • Either your locator is wrong or you need to use ExplicitWait, as already answered.
    – FDM
    Commented May 19, 2017 at 12:48
  • I have used the explicit wait. But I still get errors. I have added an internal class: internal class WebDriverWait { private FirefoxDriver driver; private TimeSpan timeSpan; public WebDriverWait(FirefoxDriver driver, TimeSpan timeSpan) { this.driver = driver; this.timeSpan = timeSpan; } internal IWebElement Until(object p) { throw new NotImplementedException(); } } }
    – OA345
    Commented May 19, 2017 at 13:19

1 Answer 1

1

I recommend you switch from ImplicitlyWait to Explicitly wait for the element you want as detailed at http://www.seleniumhq.org/docs/04_webdriver_advanced.jsp

Example:

WebDriver driver = new FirefoxDriver();
driver.get("http://somedomain/url_that_delays_loading");
WebElement myDynamicElement = (new WebDriverWait(driver, 10))
  .until(ExpectedConditions.presenceOfElementLocated(By.id("myDynamicElement")));
3
  • I added an explicit Wait. But I get an error message. I have added it above. The information from my research is not clear to be honest. I have tried adding Selenium Wait classes to my project & I get the same error. What are your thoughts, please.
    – OA345
    Commented May 19, 2017 at 12:40
  • I see the code but not what error message you are getting? Also please consider posing this as additional / separate question rather than changing original. We want the question and answer to be clear and helpful for others that run into the same situation. Commented May 19, 2017 at 12:42
  • The error is: "ElementNotVisible Exception Was Unhandled". I added the question to the one below that which I posted earlier. I actually did not change the original. A screen shot of the error message is the first one at the top of the web page. Thank you very much.
    – OA345
    Commented May 19, 2017 at 12:48

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