Nullable object must have a value.

Server Error in '/app' 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:


Line 2240:                                                {
Line 2241:                                                    int i = 1;
Line 2242:                                                    var BuildingName = Model.GetApartmentAllotteeDetailsList.Where(x => x.ApartmentId == item1.Value).Select(x => x.BuildingName).FirstOrDefault();
Line 2243:                                                    var ApartmentName = Model.GetApartmentAllotteeDetailsList.Where(x => x.ApartmentId == item1.Value).Select(x => x.ApartmentName).FirstOrDefault();
Line 2244:                                                    var Block = Model.GetApartmentAllotteeDetailsList.Where(x => x.ApartmentId == item1.Value).Select(x => x.Block).FirstOrDefault();

Source File: e:\website\Views\Home\QPRSummary.cshtml Line: 2242

Stack Trace:


[InvalidOperationException: Nullable object must have a value.]
   System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) +60
   System.Nullable`1.get_Value() +24
   ASP.<>c__DisplayClass4a.<Execute>b__e(ApartmentAllotteeDetailsVM x) in e:\website\Views\Home\QPRSummary.cshtml:2242
   System.Linq.WhereSelectListIterator`2.MoveNext() +208
   System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source) +209
   ASP._Page_Views_Home_QPRSummary_cshtml.Execute() in e:\website\Views\Home\QPRSummary.cshtml:2242
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +147
   System.Web.WebPages.StartPage.ExecutePageHierarchy() +86
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +107
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +378
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +91
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +795
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +188
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +32
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +46
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +431
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +158

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0