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PODebugging this error
 

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    <p>I randomly get this error and would like to know the best way to debug this and what it means.</p> <pre><code>MESSAGE: Object reference not set to an instance of an object. SOURCE: POL FORM: __VIEWSTATE={{LONG STRING OF TEXT HERE}} URL: /SourceIt.aspx QUERYSTRING: TARGETSITE: Void Page_Load(System.Object, System.EventArgs) STACKTRACE: at POL.PreDischargeEducation.Page_Load(Object sender, EventArgs e) at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) </code></pre> <p>EDIT: This error also randomly happened. Could updating .NET or something server side have been the cause of this?</p> <p>EDIT:</p> <pre><code>protected void Page_Load( object sender, EventArgs e ) { ctlBriefingAffidavitSpouse.Filer = "J"; ErrorTR.Visible = false; lblErrorMessage.Visible = false; ErrorTRBottom.Visible = false; lblErrorMessageBottom.Visible = false; if (!IsPostBack) { CheckCheckmarks(); ctlBriefingOverview.Visible = true; } else { string ctrlname = Request.Params.Get( "__EVENTTARGET" ); if(ctrlname.Length &lt;= 0) ShowNextControl(); } } </code></pre> <p>EDIT: This code is also not mine. I'm trying to debug why it randomly broke. I've noticed it seems to be an issue with IE 99% of the time when doing this specific action.</p>
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    1. USAmanada Smith
    1. USAmanada Smith
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    1. COyou will have to post corrosponding code to figure out
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      1. USFreelancer
    2. COAre you using ASP **Classic**, or **ASP.NET** ? You have tags for both - which cannot be - it's either classic or ASP.NET .....
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      1. USmarc_s
    3. COpossible duplicate of [What is a NullReferenceException in .NET?](http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-in-net)
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      1. USjadarnel27
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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