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Unable to consistently retrieve frame by ID

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tsjax
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tsjax asked on 26 Apr 2017, 02:23 PM

Hello,

I am having a problem with Manager.ActiveBrowser.Frames.ById() returns null intermittently. The conditions are as follows:

  var resultsFrameExpression = new HtmlFindExpression("tagname=iframe", "id=searchResultsFrame");        

  browser.WaitForElement(resultsFrameExpression, 60000, false); // Successfully returns

  browser.RefreshDomTree();

-!!->  resultFrame = browser.Manager.ActiveBrowser.Frames.ById("searchResultsFrame");

Most of the time, resultFrame comes back with a valid result. Sometimes it comes back as null. If there is even a 10 second delay before calling RefreshDomTree() and trying again, it still occurs with about the same frequency. (My assumption was that there may have been a timing issue between WaitForElement()'s successful return before being able to access the element that it successfully claims exists, but this is not the case either.

Any insight as to what I am doing wrong here would be appreciated.

 

Thanks for your help

 

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tsjax
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answered on 27 Apr 2017, 02:15 PM

This isn't a "reply", just more detailed information:

 

When things fail, the frame exists as an accessible element:

this.ThisFrame.Find.ById("searchResultsFrame")
{[Element: 'iframe:0' (id=searchResultsFrame)]}
    AbsoluteSiblingTagIndex: 0
    AbsoluteTagIndex: 71
    Attributes: Count = 5
    ChildNodes: Count = 1
    Children: Count = 0
    Content: "<iframe width=\"100%\" height=\"400\" id=\"searchResultsFrame\" src=\"blah">"
    CssClassAttributeValue: ""
    Data: ""
    Depth: 11
    ElementType: IFrame
    FindExpressionUsed: {[id 'Exact' searchResultsFrame]}
    FindObjectUsed: {ArtOfTest.WebAii.Core.Find}
    FindParamsUsed: {ArtOfTest.WebAii.ObjectModel.FindParam[1]}
    FrameElement: null
    HasIdOrName: true
    Host: {ArtOfTest.WebAii.Core.Browser}
    IdAttributeValue: "searchResultsFrame"
    InnerMarkup: ""
    InnerText: ""
    InputElementType: NotSet
    IsBeginTag: true
    IsEndTag: false
    IsProxy: false
    IsSelfClosing: false
    IsTestRegion: false
    MatchingClosingTag: {[Element: 'iframe:-1']}
    NameAttributeValue: ""
    OuterMarkup: "<iframe width=\"100%\" height=\"400\" id=\"searchResultsFrame\" src=\"blah"></iframe>"
    OwnerBrowser: {ArtOfTest.WebAii.Core.Browser}
    Parent: {[Element: 'td:20']}
    ParsedElement: {<iframe width="100%" height="400" id="searchResultsFrame" src="blah" style="height: 1075px;">}
    ParsingType: Markup
    TagName: "iframe"
    TagNameIndex: 0
    TechnologyType: Html
    TextContent: ""
    Wait: {ArtOfTest.WebAii.Synchronization.Wait}

But it claims it has no frames:
this.ThisFrame.Frames
Count = 0

Requesting the frames from the parent-most browser also does not include it:
this.CrmMain.Frames
Count = 2
    [0]: {[Frame_0, ArtOfTest.WebAii.Core.Browser]} // which is Frame:id=frame-scale,name=Frame_0
    [1]: {[Frame_1, ArtOfTest.WebAii.Core.Browser]} // which is FrameInfo: Frame:id=Main,name=Frame_1 ("this.ThisFrame")

There should be three, though. It is nested within Frame[1] (which is what this.ThisFrame above refers to).
Sidenote: I believe that the missing frame is part of the same pageload (loads with and at the same time - no AJAX) with its parent, Frame_1 (this.ThisFrame), when it is loaded.

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Nikolay Petrov
Telerik team
answered on 01 May 2017, 08:11 AM
Hi Travis,

This problem seems to be an odd one. To be able to investigate it could you provide a test project for sample public accessible app that reproduces it, please? 

Kind Regards,
Nikolay Petrov
Telerik by Progress
 
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tsjax
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answered on 01 May 2017, 12:29 PM

Hello Nikolay,

I was playing around with this some more on Friday and I was able to get it working consistently (so far).  I am not refreshing the DOM of the top-most browser rather than the one that technically holds the iframe I was seeking. I understand that Telerik holds all the iframes "flattened" in the top-level browser and even if the DOM one level in that has a child iframe is refreshed, this will have no effect on the top-most browser's frame list of that third generation iframe even though the frame is accessible as an element from its parent's browser.

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tsjax
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answered on 01 May 2017, 12:30 PM
correction: "I am _now_ refreshing..."
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Nikolay Petrov
Telerik team
answered on 03 May 2017, 03:28 PM
Hi Travis,

Thank you for your feedback on the case.

Best Regards,
Nikolay Petrov
Telerik by Progress
 
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