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NullReferenceException

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Michal
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Michal asked on 05 Oct 2016, 08:35 PM

I have a problem with finding an element. When I run my test, then sometimes I get this error in my test step and sometimes it works. I tried wait steps and other wait methods in code, but it doesn't help me.

ArtOfTest.Common.Design.Exceptions.ExecutionException: Exception thrown executing coded step: 'Check unit prices in the modal form'. ---> System.NullReferenceException: Object reference not set to an instance of an object.   at ArtOfTest.WebAii.Controls.HtmlControls.HtmlDiv..ctor(Element e)

Here is the code, where it crashes:

HtmlFind find = new HtmlFind(Manager.ActiveBrowser.Find.ById("modal"));
HtmlDiv div = new HtmlDiv(find.ByAttributes("class=col-info")); 

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Elena
Telerik team
answered on 10 Oct 2016, 12:49 PM
Hello Michal,

Thank you for contacting us. 

Since the observed inconsistency is intermittent I assume the application is not in a state to find the elements. Have you tried to refresh the DOM tree? This could be obtained in code as follows:

Manager.ActiveBrowser.RefreshDomTree();

If this would not help you as well please consider sharing your exact script and access to your application so that I could continue the investigation. Thanks in advance for the cooperation! 

Regards,
Elena Tsvetkova
Telerik by Progress
 
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