Server Error in '/' Application.

Nullable object must have a value.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Nullable object must have a value.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[InvalidOperationException: Nullable object must have a value.]
   System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) +60
   QuadKids_New_Design.EventResults.outputResultData(ng_athlete r) in C:\Users\IanMorgan\source\Workspaces\QuadKids\QuadKids 2016-with Web API\Info\eventresults.aspx.vb:333
   QuadKids_New_Design.EventResults.outputIndividualResultsRow(Int32 rank, ng_athlete r) in C:\Users\IanMorgan\source\Workspaces\QuadKids\QuadKids 2016-with Web API\Info\eventresults.aspx.vb:321
   QuadKids_New_Design.EventResults.outputResults(String title, IList`1 results, String gender) in C:\Users\IanMorgan\source\Workspaces\QuadKids\QuadKids 2016-with Web API\Info\eventresults.aspx.vb:556
   QuadKids_New_Design.EventResults.outputIndividualRankings(Guid eventID) in C:\Users\IanMorgan\source\Workspaces\QuadKids\QuadKids 2016-with Web API\Info\eventresults.aspx.vb:524
   QuadKids_New_Design.EventResults.generateResultTabs(ng_event event_) in C:\Users\IanMorgan\source\Workspaces\QuadKids\QuadKids 2016-with Web API\Info\eventresults.aspx.vb:200
   QuadKids_New_Design.EventResults.Page_Load(Object sender, EventArgs e) in C:\Users\IanMorgan\source\Workspaces\QuadKids\QuadKids 2016-with Web API\Info\eventresults.aspx.vb:111
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0