没有这样的元素：无法定位元素：{"method":"css selector","selector":"#Password"} 使用 Selenium 和 C#

Question

I wrote a simple test for login

namespace Seleniumtest.Customer
{
    [TestFixture]
    class LoginTest :TestBase
    {
        [Test]
        public void LoginWithPhoneNumber()
        {
            webDriver.Navigate().GoToUrl("https://test123.ifc.ir/login");
            webDriver.FindElement(By.Id("EmailOrPhoneNumber")).SendKeys("09108599423");
            webDriver.FindElement(By.ClassName("buttons")).Click();
            var input = webDriver.FindElement(By.Id("Password"));     
            Assert.That(input.Displayed, Is.True);
        }

    }
}

This program will click login and have login and find partial view input password but its just instert the value in username and click the submit but never find password.

Answer 1

The issue is that on page one you have username and clickable button, and once you click on the button it will redirect you to a new page where you can provide the password.

However, this new page is not rendered properly and that's the reason you are getting

no such element: Unable to locate element : {"method":"css selector","selector":"#Password"} 

In C#-Selenium bindings, you can use the explicit wait like below:

WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
IWebElement input = wait.Until(e => e.FindElement(By.Id("Password")));

and now the input is a web element, you can input the password with SendKeys method.

input.SendKeys("your password");

Reference link

Answer 2

Once you invoke the url through get() , fillup the EmailOrPhoneNumber field and click on the Submit button it would need a little while for the Password field to be visible and interactable .

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Solution

In these cases to invoke Click() on the desired element you have to induce WebDriverWait for the ElementToBeClickable and you can use either of the following locator strategies :

• Id :

   new WebDriverWait(driver, TimeSpan.FromSeconds(10)).Until(ExpectedConditions.ElementToBeClickable(By.Id("Password"))).Click();

• CssSelector :

   new WebDriverWait(driver, TimeSpan.FromSeconds(20)).Until(ExpectedConditions.ElementToBeClickable(By.CssSelector("#Password"))).Click();

• XPath :

   new WebDriverWait(driver, TimeSpan.FromSeconds(20)).Until(ExpectedConditions.ElementToBeClickable(By.XPath("//*[@id='Password']"))).Click();

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References

You can find a couple of relevant detailed discussions in:

• C# selenium unable to locate button through xpath