searchcontext of the locator object cannot be null

[anita punukollu]

Hi All,

I am getting this error : searchcontext of the locator object cannot be null

This happens after navigating to the next and then  clicking on Create New Link.

I have attached the screenshot for better idea.

Any suggestion to handle this error.

Regards,

Anita

[Oleksiy Kyrylenko]

the issue is thrown on  BasePage. Can you include the constructor of you BasePage in screenshot. Also, it seems like you are missing PageFactory initializer such as- PageFactory.InitElements(this, new RetryingElementLocator(driver, TimeSpan.FromSeconds(20))); Additionally, I believe a page factory will be deprecated at some point for dotnet bindings so you need to switch to other approaches

[anita punukollu]

Hi Oleksiy,
Thank you for your response.
Please find the BasePage screenshot attached.

Regards,

Anita

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[Oleksiy Kyrylenko]

 PageFacotry.InitElements(driver, this) trying to initialize elements in a base page not EmployeeList page. Check this article - https://www.swtestacademy.com/page-factory-selenium-webdriver/  Overall PageFactory is deprecated so there is no future for that and I highly recommend not to use it - http://jimevansmusic.blogspot.com/2018/03/deprecating-parts-of-seleniums-net.html

[anita punukollu]

Hi Oleksiy,

Thank you for you help.

I am not using Pagefactory as it got deprecated.

However I am still getting error as "Object reference not set to an instance of an object".

Do I need to initialise the constructor and pass the Webdriver object.

Please advise

Regards,

Anita

On Wed, Dec 4, 2019 at 4:42 PM Oleksiy Kyrylenko <oleksiykyryle...@gmail.com> wrote:

 PageFacotry.InitElements(driver, this) trying to initialize elements in a base page not EmployeeList page. Check this article - https://www.swtestacademy.com/page-factory-selenium-webdriver/  Overall PageFactory is deprecated so there is no future for that and I highly recommend not to use it - http://jimevansmusic.blogspot.com/2018/03/deprecating-parts-of-seleniums-net.html

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[Alex K]

the issue happens on a homePage  but you provided a screenshot of a BasePage only, so it is only my guess of what the issue is 

public class BaseTest

{

}

public class MyTestSets : BaseTest

{

[Test]

public void MyTest()

{

MyPage page  = new MyPage(driver, wati);

page.PerfromAction();

}

}

public class MyPage : BasePage

{

public MyPaget(driver, wait):base(driver, wait);

}

public class BasePage

{

private IWebDeriver driver;

private IWebDriverWait wait;

public BasePage(driver, wait)

{

driver = driver;

wait = wait;

}

}

Let me explain this code-

First you initialize your driver - it is not in this example, I assume that would be done in  a BaseTest class

Then, since MyTestSet class inherits from BaseTest it will automatically can contain your driver as a result you can pass driver and wait when you create an instance of YourPage

Since YourPage inherit from BasePage which accepts 2 arguments(driver and wait) you need to provide these 2 arguments which you can do by :base(driver, wait)

As a result you can use not driver and wait in your BasePage. if you do not provide it, you cannot use. This about this just like giving a fork to someone. If you need to it and ask me for a fork untill I give it to you, you cannot have your meal. Same here, untill your provide a driver to your class, you cannot use it in your class

Looking at your example, it think this what you are trying to do

       private static T GetPage<T>(IWebDriver driver) where T : new()
        {
            var page = Activator.CreateInstance(typeof(T), new object[] { driver });
            PageFactory.InitElements(driver, page);
            return (T)page;
        }

Hope that will help