Upgrade to .NET 10 #413

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1. monkeyK1n9

   added

   Requires TriageThis issue has not been checked by the project team.This issue has not been checked by the project team.

   on Nov 20, 2025
2. rahul7720 commented on Nov 24, 2025

   

   rahul7720

   on Nov 24, 2025

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   After upgrading the MAUI app from .NET 9 to .NET 10 and EF Core to 10, the app now crashes at runtime when using CommunityToolkit.Datasync.Client with offline sync.

   I get this error:

   Method not found: string Microsoft.EntityFrameworkCore.Diagnostics.AbstractionsStrings.ArgumentIsEmpty(object)
   
   Source: Microsoft.EntityFrameworkCore.Relational
   
      at Microsoft.EntityFrameworkCore.RelationalEntityTypeBuilderExtensions.CanSetTable(...)
      at Microsoft.EntityFrameworkCore.RelationalEntityTypeBuilderExtensions.ToTable(...)
      ...
      at Microsoft.EntityFrameworkCore.DbContext.get_Model()
      at CommunityToolkit.Datasync.Client.Offline.OperationsQueue.OperationsQueueManager.GetEntityMap(OfflineDbContext context) in /_/src/CommunityToolkit.Datasync.Client/Offline/OperationsQueue/OperationsQueueManager.cs:line 96
      at CommunityToolkit.Datasync.Client.Offline.OperationsQueue.OperationsQueueManager..ctor(OfflineDbContext context) in /_/src/CommunityToolkit.Datasync.Client/Offline/OperationsQueue/OperationsQueueManager.cs:line 63
      at CommunityToolkit.Datasync.Client.Offline.OfflineDbContext..ctor(DbContextOptions options) in /_/src/CommunityToolkit.Datasync.Client/Offline/OfflineDbContext.cs:line 136
      ...
   

   This worked fine on .NET 9 with the previous EF Core version.

   👍React with 👍1Reacted by King
3. ramatah commented on Nov 25, 2025

   

   ramatah

   on Nov 25, 2025

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   CommunityToolkit.Datasync.Server.OpenApi version 9.0.5 is also not compatible with ASP.NET Core 10. Using it throws the following exception:

   Unhandled exception. System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types.
   Method 'TransformAsync' in type 'CommunityToolkit.Datasync.Server.OpenApi.DatasyncOperationTransformer'
   from assembly 'CommunityToolkit.Datasync.Server.OpenApi, Version=9.0.5.0, Culture=neutral, PublicKeyToken=null'
   does not have an implementation.
      at System.Reflection.RuntimeModule.GetDefinedTypes()
      at Microsoft.AspNetCore.Mvc.Controllers.ControllerFeatureProvider.PopulateFeature(IEnumerable`1 parts, ControllerFeature feature)
      at Microsoft.AspNetCore.Mvc.ApplicationParts.ApplicationPartManager.PopulateFeature[TFeature](TFeature feature)
      at Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.GetControllerTypes()
      at Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.GetDescriptors()
      at Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.OnProvidersExecuting(ActionDescriptorProviderContext context)
      at Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.UpdateCollection()
      at Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.Initialize()
      at Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.GetChangeToken()
      at Microsoft.Extensions.Primitives.ChangeToken.ChangeTokenRegistration`1..ctor(Func`1 changeTokenProducer, Action`1 changeTokenConsumer, TState state)
      at Microsoft.Extensions.Primitives.ChangeToken.OnChange(Func`1 changeTokenProducer, Action changeTokenConsumer)
      at Microsoft.AspNetCore.Mvc.Routing.ActionEndpointDataSourceBase.Subscribe()
      at Microsoft.AspNetCore.Builder.ControllerEndpointRouteBuilderExtensions.GetOrCreateDataSource(IEndpointRouteBuilder endpoints)
      at Microsoft.AspNetCore.Builder.ControllerEndpointRouteBuilderExtensions.MapControllers(IEndpointRouteBuilder endpoints)
      ...
   
   System.TypeLoadException: Method 'TransformAsync' in type 'CommunityToolkit.Datasync.Server.OpenApi.DatasyncOperationTransformer'
   from assembly 'CommunityToolkit.Datasync.Server.OpenApi, Version=9.0.5.0, Culture=neutral, PublicKeyToken=null'
   does not have an implementation.
   

   The cause of the issue is that the signature of Microsoft.AspNetCore.OpenApi.IOpenApiOperationTransformer.TransformAsync() changed in ASP.NET Core 10.

   1. In ASP.NET Core 9, the signature was:

      public System.Threading.Tasks.Task TransformAsync(Microsoft.OpenApi.Models.OpenApiOperation operation, Microsoft.AspNetCore.OpenApi.OpenApiOperationTransformerContext context, System.Threading.CancellationToken cancellationToken);
      

   2. In ASP.NET Core 10, the signature is now:

      public System.Threading.Tasks.Task TransformAsync(Microsoft.OpenApi.OpenApiOperation operation, Microsoft.AspNetCore.OpenApi.OpenApiOperationTransformerContext context, System.Threading.CancellationToken cancellationToken);
      

   Notice that the OpenApiOperation class was moved from the Microsoft.OpenApi.Models namespace to the Microsoft.OpenApi namespace.

   👍React with 👍1Reacted by Gagik Kyurkchyan
4. adrianhall commented on Dec 1, 2025

   

   adrianhall

   on Dec 1, 2025

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   Planning on upgrading to dotnet 10 this week - stay tuned.

   Note Datasync 9.x will NOT be compatible with dotnet 10 - there are known issues.

   ❤️React with ❤️2Reacted by Tahiry Ramanampanoharana and King
5. adrianhall

   self-assigned this

   on Dec 1, 2025
6. adrianhall

   added

   InfrastructureChanges to the build and release systemChanges to the build and release system

   and removed

   Requires TriageThis issue has not been checked by the project team.This issue has not been checked by the project team.

   on Dec 1, 2025
7. adrianhall

   added the

   Task

   issue type on Dec 1, 2025
8. adrianhall

   added this to the 10.0.0 milestone on Dec 1, 2025
9. adrianhall

   linked a pull request that will close this issueAttempt at updating to .Net 10 to fix crash with OpenAPI #414on Dec 2, 2025
10. adrianhall

    added 2 commits that reference this issue on Dec 2, 2025

    (CommunityToolkit#413) WIP: OpenApi support

    fbcb896

    (CommunityToolkit#413) WIP: dotnet 10 update.

    84d05bc
11. duckblaster

    added 2 commits that reference this issue on Dec 3, 2025

    (CommunityToolkit#413) WIP: OpenApi support

    140b0b2

    (CommunityToolkit#413) WIP: dotnet 10 update.

    28ee894
12. adrianhall

    added 3 commits that reference this issue on Dec 4, 2025

    (CommunityToolkit#413) Revert back to EFCore 9.x

    50bc510

    (CommunityToolkit#413) dotnet 10 (no efcore) support

    1c5f00a

    (#413) dotnet 10 support (#418)

    ...

    949b368
13. adrianhall commented on Dec 4, 2025

    

    adrianhall

    on Dec 4, 2025

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    Fixed via 949b368 #418
14. adrianhall

    closed this as completedon Dec 4, 2025