Baike.dev
Log in
Back to tool/Back to issues
#3083·BenchmarkDotNet

TypeLoadException is thrown when using third party exporter

Author: filzrevCreated Apr 13, 2026Updated May 4, 2026

When using latest master branch code. BenchmarkDotNet.Samples project throw following exception.

Unhandled exception. System.TypeLoadException: Method 'ExportAsync' in type 'VSDiagnosticsExporter' from assembly 'VSDiagnostics.BenchmarkDotNet, Version=18.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' does not have an implementation.
   at Microsoft.VSDiagnostics.VSDiagnosticsDiagnoser.get_Exporters()
   at BenchmarkDotNet.Configs.ImmutableConfigBuilder.GetExporters(IEnumerable`1 exporters, ImmutableHashSet`1 uniqueDiagnosers, IList`1 configAnalyse) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Configs\ImmutableConfigBuilder.cs:line 129
   at BenchmarkDotNet.Configs.ImmutableConfigBuilder.Create(IConfig source) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Configs\ImmutableConfigBuilder.cs:line 46
   at BenchmarkDotNet.Running.BenchmarkConverter.GetFullTypeConfig(Type type, IConfig config) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\BenchmarkConverter.cs:line 98
   at BenchmarkDotNet.Running.BenchmarkConverter.MethodsToBenchmarksWithFullConfig(Type type, MethodInfo[] benchmarkMethods, IConfig config) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\BenchmarkConverter.cs:line 44
   at BenchmarkDotNet.Running.BenchmarkConverter.TypeToBenchmarks(Type type, IConfig config) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\BenchmarkConverter.cs:line 26
   at BenchmarkDotNet.Running.TypeFilter.<>c__DisplayClass1_0.<Filter>b__0(Type type) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\TypeFilter.cs:line 65
   at System.Linq.Enumerable.SelectListIterator`2.MoveNext()
   at System.Linq.Enumerable.WhereEnumerableIterator`1.ToArray()
   at BenchmarkDotNet.Running.TypeFilter.Filter(IConfig effectiveConfig, IEnumerable`1 types) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\TypeFilter.cs:line 64
   at BenchmarkDotNet.Running.BenchmarkSwitcher.RunWithDirtyAssemblyResolveHelper(String[] args, IConfig config, Boolean askUserForInput, CancellationToken cancellationToken) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\BenchmarkSwitcher.cs:line 162
   at BenchmarkDotNet.Running.BenchmarkSwitcher.RunAsync(String[] args, IConfig config, CancellationToken cancellationToken) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\BenchmarkSwitcher.cs:line 111
   at BenchmarkDotNet.Engines.BenchmarkDotNetSynchronizationContext.ExecuteUntilComplete[T](ValueTask`1 valueTask) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Engines\BenchmarkSynchronizationContext.cs:line 101
   at BenchmarkDotNet.Engines.BenchmarkSynchronizationContext.ExecuteUntilComplete[T](ValueTask`1 valueTask) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Engines\BenchmarkSynchronizationContext.cs:line 29
   at BenchmarkDotNet.Running.BenchmarkSwitcher.Run(String[] args, IConfig config) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\src\BenchmarkDotNet\Running\BenchmarkSwitcher.cs:line 73
   at BenchmarkDotNet.Samples.Program.Main(String[] args) in C:\Projects\GitHub\thirdparty\BenchmarkDotNet\samples\BenchmarkDotNet.Samples\Program.cs:line 27

It seems be occurred because IExporter interface has breaking changes on recent commit. Is it able to keep interface backward compatibility?

Otherwise, third party exporter dependency needs updated after BenchmarkDotNet 0.16.x is released.

Source: dotnet/BenchmarkDotNet

View original on GitHubView discussion on GitHub