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Blazor workshop
https://aka.ms/blazorworkshop
MIT License
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The current .NET SDK does not support targeting .NET 7.0. Either target .NET 6.0 or lower, or use a version of the .NET SDK that supports .NET 7.0. #357

Closed KunLee closed 1 year ago

KunLee commented 1 year ago

Hi guys,

I got this error after downloading the latest project and starting it up. I have installed .Net 7. Tried to adjust .net version, but whenever click the properties of projects. This error comes up.

After upgrade VS to 17.4, the issue was resolved.

12/24/2022 10:47:09 PM Recoverable Microsoft.VisualStudio.ProjectSystem.Query.QueryExecutionException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim.EntryPointFinder.FindEntryPoints(INamespaceSymbol symbol) at Microsoft.VisualStudio.ProjectSystem.Properties.StartupObjectsEnumGenerator.d8.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.VisualStudio.ProjectSystem.PropertyPages.PageDynamicEnumProperty.d6.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Query.SupportedValueDataProducer.d1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Query.QueryDataFromProviderStateProducerBase`1.d0.MoveNext() --- End of inner exception stack trace --- at Microsoft.VisualStudio.ProjectSystem.Query.QueryExecution.QuerySubscription1.<RunQueryOnceAsync>d__9.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.Query.QueryExecution.QuerySubscription1.<>cDisplayClass8_0.<b0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Implementation.PropertyPages.Designer.ProjectPropertyDataAccess.Observer.d10.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at Microsoft.VisualStudio.ProjectSystem.VS.Implementation.PropertyPages.Designer.ProjectPropertyDataAccess.Observer.d9.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Implementation.PropertyPages.Designer.ProjectPropertiesEditor.<>cDisplayClass0_0.<<-ctor>b0>d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Implementation.PropertyPages.Designer.AsyncLoadContent.<>c__DisplayClass0_0.<b__0>d.MoveNext()

12/24/2022 10:47:15 PM Recoverable Microsoft.VisualStudio.ProjectSystem.Query.QueryExecutionException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim.EntryPointFinder.FindEntryPoints(INamespaceSymbol symbol) at Microsoft.VisualStudio.ProjectSystem.Properties.StartupObjectsEnumGenerator.d8.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.VisualStudio.ProjectSystem.PropertyPages.PageDynamicEnumProperty.d6.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Query.SupportedValueDataProducer.d1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.VS.Query.QueryDataFromProviderStateProducerBase`1.d0.MoveNext() --- End of inner exception stack trace --- at Microsoft.VisualStudio.ProjectSystem.Query.QueryExecution.QuerySubscription1.<RunQueryOnceAsync>d__9.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.VisualStudio.ProjectSystem.Query.QueryExecution.QuerySubscription1.<>c__DisplayClass8_0.<b__0>d.MoveNext()