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Small and medium business | Business Central, N...
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How to get the API error from a WebException

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Hi,

I am currently working on a project and I need to show the details of the WEB REQUEST and WEB RESPONSE from WebException.  I have made some progress earlier and it was working for about a month when out of the blue I get this error:

Microsoft Dynamics 365 Business Central
---------------------------

A DotNet variable has not been instantiated. Attempting to call System.Net.WebResponse.GetResponseStream in CodeUnit LoyaltyI: UploadJSon
---------------------------
OK
---------------------------

Here is my code:

    Exception := GETLASTERROROBJECT;
    WebException := Exception.InnerException;
    Response := WebException.Response;
    Response.GetResponseStream;
    StreamReader := StreamReader.StreamReader(Response.GetResponseStream);
    ReqString := StreamReader.ReadToEnd;


    pathName := 'c:\errorLog\'+'REQUEST-'+FORMAT(TODAY,5,'<Day,2><Month,2>')+FORMAT(DATE2DMY(TODAY,3))+'-'+FORMAT(TIME,0,'<Hours24,2><Minutes,2><Seconds,2>') +'.txt';
    errorFile.CREATE(pathName);  
    errorFile.CREATEOUTSTREAM(errorOut);
    errorOut.WRITETEXT(GETLASTERRORTEXT);
    errorOut.WRITETEXT;
    errorOut.WRITETEXT;
    errorOut.WRITETEXT(ReqString.ToString);
    errorFile.CLOSE;

Like I mentioned, it was working before and for the life of me I do not know how it suddenly broke.  Any help is appreciated.  Thanks.

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  • Suggested answer
    Andy Sather Profile Picture
    Microsoft Employee on at

    Hello  - We currently do not have dedicated Dev support via the Dynamics 365 Business Central forums, but I wanted to provide you some additional resources to assist.  If you need assistance with debugging or coding I would recommend discussing this on one of our communities.

    www.yammer.com/dynamicsnavdev

    dynamicsuser.net/.../developers

    I will open this up to the community in case they have something to add.

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