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POI'm getting a NullReferenceException (VB.Net) and don't see where it could be coming from (dev with 15+ years of experience perhaps having a 'moment')
 

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  1. POI'm getting a NullReferenceException (VB.Net) and don't see where it could be coming from (dev with 15+ years of experience perhaps having a 'moment')
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    <p>None of the parameters are empty/null/nothing</p> <pre><code>auditAuthSuccess(UserName, olaHelper.batchID, olaHelper.authenticatedStudentIDSite) '&lt;-- I put a break on this line </code></pre> <p>Code execution halts there and I have no indications of an exception in my output window.</p> <p>The signature for the auditAuthSuccess method is:</p> <pre><code>Public Shared Sub auditAuthSuccess(ByVal managementUserName As String, ByVal batchID As String, ByVal studentID As String) fooBar() '&lt;-- I put a break here also and code halts as expected, but there's a NullReferenceException in the output window now End Sub </code></pre> <p>When code is halted on the line calling fooBar(), the Call Stack shows:</p> <blockquote> <p>OLAWeb.DLL!Comptek.OLA.olaHelper.auditAuthSuccess(String managementUserName, String batchID, String studentID) Line 467 Basic</p> </blockquote> <pre><code>OLAWeb.DLL!Comptek.OLA.frmLogin.FinishLogin(System.Web.UI.WebControls.AuthenticateEventArgs e, String UserName, String Password, String RedirectAddress, String strRoles) Line 234 + 0xc5 bytes Basic </code></pre> <p>No unmanaged code, no other methods, etc.. So were in the world is the NullReferenceException coming from?</p> <p><a href="http://pastebin.com/YDnVJBYf" rel="nofollow">http://pastebin.com/YDnVJBYf</a> (code also here)</p>
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    1. USrainabba
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      1. POI'm getting a NullReferenceException (VB.Net) and don't see where it could be coming from (dev with 15+ years of experience perhaps having a 'moment')
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      1. VTUpMod
    1. COYou could try breaking when a CLR exception is thrown: VS Debug -> Exceptions -> Check 'Thrown' from the same line as Common Language Runtime Exception.
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      1. POI'm getting a NullReferenceException (VB.Net) and don't see where it could be coming from (dev with 15+ years of experience perhaps having a 'moment')
      1. USStefan Szasz
    2. COI already had this enabled (and double-checked to be sure). The exception is thrown in my web-app assembly according to the Output window yet the debugger never actually halts for an exception.
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      1. POI'm getting a NullReferenceException (VB.Net) and don't see where it could be coming from (dev with 15+ years of experience perhaps having a 'moment')
      1. USrainabba
    3. COFound it! The StudentID parameter was showing as "0" in my watch window, but it's actually retrieved passed as "olaHelper.studentID" and olaHelper is a helper class and studentID is a Public Shared ReadOnly property that refers to a session() variable that WAS Nothing, but the Get uses a Try...Catch block casting the session variable to an XElement, then using LINQ against that. The reference inside the try block was throwing the exception, but the whole point was to return 0 if a NRE was thrown (to provide a default value essentially). I didn't handle everything as I intended to though. :)
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      1. POI'm getting a NullReferenceException (VB.Net) and don't see where it could be coming from (dev with 15+ years of experience perhaps having a 'moment')
      1. USrainabba
 

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