使用字符串创建 ChromeWebElement 时出现无效参数异常

Question

When I create a ChromeWebElement using a string at runtime, I get

The best overloaded method match for 'OpenQA.Selenium.Chrome.ChromeWebElement.ChromeWebElement(OpenQA.Selenium.Chrome.ChromeDriver, string)' has some invalid argumentsResult message:

    public class Browser {

           public static dynamic driver,d;

          public Browser(BrowserDriver browserDriver, FeatureContext featureContext)
    {
         _browserDriver = browserDriver;
         driver = _browserDriver._driver;
         _featureContext = featureContext;
         _featureContext.Add("driver", driver);

    }

      [StepArgumentTransformation]

      public ChromeWebElement convertToWebElement(string c)
      {
        d = _featureContext.Get<IWebDriver>("driver");
          return new ChromeWebElement(Browser.d,c);

      }  

According to the this , the constructor only takes two arguments ChromeDriver and string . So what is wrong here?

Answer 1

Look at this line

new ChromeWebElement(Browser.d,c);

in this case

• c is string
• Browser.d is dynamic (declared here public static dynamic d; )

but the constructor of ChromeWebElement requires:

public ChromeWebElement(
    ChromeDriver parent,
    string elementId
)

Change declaration of d to

private static IWebDriver d;

or even better, remove that declaration and use

  public ChromeWebElement convertToWebElement(string elementId)
  {
      IWebDriver parent = _featureContext.Get<IWebDriver>("driver");
      return new ChromeWebElement(parent, elementId);
  }