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| # hot-reload-repro | ||
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| This repository demonstrates the issue reported in https://github.com/dotnet/aspnetcore/issues/43593: | ||
| using **any** custom tag helper breaks dotnet watch hot reload in Razor Pages with `System.TypeLoadException`. | ||
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| ## Steps To Reproduce | ||
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| The issue is very easy to reproduce: | ||
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| 1. create a fresh Razor Pages project with `dotnet new razor` -> [commit#3754a57](https://github.com/dstockhammer/hot-reload-repro/commit/3754a570d99b6f1ed199c10e780794acd9656229) | ||
| 2. create a custom tag helper and use in on the Index page (or any other page) -> [commit#912f252](https://github.com/dstockhammer/hot-reload-repro/commit/912f252994e3cd9c0fecdddd80d2a19c76f61aca) | ||
| 3. run `dotnet watch` | ||
| 4. making any change that triggers a hot reload -> boom 💥 | ||
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| ## Console Output | ||
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| ``` | ||
| > dotnet watch | ||
| dotnet watch 🔥 Hot reload enabled. For a list of supported edits, see https://aka.ms/dotnet/hot-reload. | ||
| 💡 Press "Ctrl + R" to restart. | ||
| dotnet watch 🔧 Building... | ||
| Determining projects to restore... | ||
| All projects are up-to-date for restore. | ||
| HotReloadRepro -> D:\workspace\hot-reload-repro\bin\Debug\net6.0\HotReloadRepro.dll | ||
| dotnet watch 🚀 Started | ||
| info: Microsoft.Hosting.Lifetime[14] | ||
| Now listening on: https://localhost:7179 | ||
| info: Microsoft.Hosting.Lifetime[14] | ||
| Now listening on: http://localhost:5016 | ||
| info: Microsoft.Hosting.Lifetime[0] | ||
| Application started. Press Ctrl+C to shut down. | ||
| info: Microsoft.Hosting.Lifetime[0] | ||
| Hosting environment: Development | ||
| info: Microsoft.Hosting.Lifetime[0] | ||
| Content root path: D:\workspace\hot-reload-repro\ | ||
| dotnet watch ⌚ File changed: .\Pages\Index.cshtml. | ||
| dotnet watch 🔥 Hot reload of changes succeeded. | ||
| fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1] | ||
| An unhandled exception has occurred while executing the request. | ||
| fail: Microsoft.AspNetCore.Server.Kestrel[13] | ||
| Connection id "0HMK832AIMGVR", Request id "0HMK832AIMGVR:00000013": An unhandled exception was thrown by the application. | ||
| System.AggregateException: An error occurred while writing to logger(s). (Could not load type 'HotReloadRepro.Pages.Pages_Index+<ExecuteAsync>d__8#1' from assembly 'HotReloadRepro, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.) (Could not load type 'HotReloadRepro.Pages.Pages_Index+<ExecuteAsync>d__8#1' from assembly 'HotReloadRepro, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.) | ||
| ---> System.TypeLoadException: Could not load type 'HotReloadRepro.Pages.Pages_Index+<ExecuteAsync>d__8#1' from assembly 'HotReloadRepro, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. | ||
| at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, RuntimeType type, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) | ||
| at System.Reflection.CustomAttribute.AddCustomAttributes(ListBuilder`1& attributes, RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder`1 derivedAttributes) | ||
| at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType) | ||
| at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeMethodInfo method, RuntimeType caType, Boolean inherit) | ||
| at System.Reflection.RuntimeMethodInfo.GetCustomAttributes(Type attributeType, Boolean inherit) | ||
| at System.Attribute.GetCustomAttributes(MemberInfo element, Type attributeType, Boolean inherit) | ||
| at System.Reflection.CustomAttributeExtensions.GetCustomAttributes[T](MemberInfo element, Boolean inherit) | ||
| at System.Diagnostics.StackTrace.TryResolveStateMachineMethod(MethodBase& method, Type& declaringType) | ||
| at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat, StringBuilder sb) | ||
| at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat) | ||
| at System.Exception.get_StackTrace() | ||
| at System.Exception.ToString() | ||
| at Microsoft.Extensions.Logging.Console.SimpleConsoleFormatter.CreateDefaultLogMessage[TState](TextWriter textWriter, LogEntry`1& logEntry, String message, IExternalScopeProvider scopeProvider) | ||
| at Microsoft.Extensions.Logging.Console.SimpleConsoleFormatter.Write[TState](LogEntry`1& logEntry, IExternalScopeProvider scopeProvider, TextWriter textWriter) | ||
| at Microsoft.Extensions.Logging.Console.ConsoleLogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter) | ||
| at Microsoft.Extensions.Logging.Logger.<Log>g__LoggerLog|12_0[TState](LogLevel logLevel, EventId eventId, ILogger logger, Exception exception, Func`3 formatter, List`1& exceptions, TState& state) | ||
| --- End of inner exception stack trace --- | ||
| at Microsoft.Extensions.Logging.Logger.ThrowLoggingError(List`1 exceptions) | ||
| at Microsoft.Extensions.Logging.Logger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter) | ||
| at Microsoft.Extensions.Logging.Logger`1.Microsoft.Extensions.Logging.ILogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter) | ||
| at Microsoft.Extensions.Logging.LoggerMessage.<>c__DisplayClass8_0.<Define>g__Log|0(ILogger logger, Exception exception) | ||
| at Microsoft.AspNetCore.Diagnostics.DiagnosticsLoggerExtensions.UnhandledException(ILogger logger, Exception exception) | ||
| at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context) | ||
| at Microsoft.AspNetCore.Watch.BrowserRefresh.BrowserRefreshMiddleware.InvokeAsync(HttpContext context) | ||
| at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application) | ||
| ---> (Inner Exception #1) System.TypeLoadException: Could not load type 'HotReloadRepro.Pages.Pages_Index+<ExecuteAsync>d__8#1' from assembly 'HotReloadRepro, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. | ||
| at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, RuntimeType type, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) | ||
| at System.Reflection.CustomAttribute.AddCustomAttributes(ListBuilder`1& attributes, RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, ListBuilder`1 derivedAttributes) | ||
| at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType) | ||
| at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeMethodInfo method, RuntimeType caType, Boolean inherit) | ||
| at System.Reflection.RuntimeMethodInfo.GetCustomAttributes(Type attributeType, Boolean inherit) | ||
| at System.Attribute.GetCustomAttributes(MemberInfo element, Type attributeType, Boolean inherit) | ||
| at System.Reflection.CustomAttributeExtensions.GetCustomAttributes[T](MemberInfo element, Boolean inherit) | ||
| at System.Diagnostics.StackTrace.TryResolveStateMachineMethod(MethodBase& method, Type& declaringType) | ||
| at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat, StringBuilder sb) | ||
| at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat) | ||
| at System.Exception.get_StackTrace() | ||
| at System.Exception.ToString() | ||
| at System.Text.StringBuilder.Append(Object value) | ||
| at Microsoft.Extensions.Logging.EventLog.EventLogLogger.Log[TState](LogLevel logLevel, EventId eventId, TState state, Exception exception, Func`3 formatter) | ||
| at Microsoft.Extensions.Logging.Logger.<Log>g__LoggerLog|12_0[TState](LogLevel logLevel, EventId eventId, ILogger logger, Exception exception, Func`3 formatter, List`1& exceptions, TState& state)<--- | ||
| ``` |