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Tag: dotnet-11

269 posts · Page 6 of 27

2026-07-30 errors blazor dotnet

Fix: JavaScript interop calls cannot be issued at this time (Blazor prerendering)

Prerendering runs your component on the server with no browser attached, so IJSRuntime throws. Move the call into OnAfterRenderAsync, gate it on RendererInfo.IsInteractive, or disable prerendering.

2026-07-30 errors ef-core ef-core-11

Fix: Your startup project doesn't reference Microsoft.EntityFrameworkCore.Design

Add Microsoft.EntityFrameworkCore.Design to the startup project that dotnet ef builds, not the project holding your DbContext, and pass -s in layered solutions.

2026-07-29 errors csharp dotnet

Fix: Reflection-based serialization has been disabled for this application

This InvalidOperationException means PublishTrimmed or PublishAot flipped JsonSerializerIsReflectionEnabledByDefault to false. Fix it with a source-generated JsonSerializerContext.

2026-07-29 errors ef-core ef-core-11

Fix: "The model for context 'X' has pending changes" in EF Core 11

EF Core throws PendingModelChangesWarning when your model no longer matches the last migration snapshot. Add the migration, or fix the false positive behind it.

2026-07-28 ef-core ef-core-11 dotnet

How to apply EF Core 11 migrations in production with dotnet ef migrations bundle

A complete guide to deploying EF Core 11 schema changes with migration bundles: building efbundle in CI, the appsettings.json trap with named connection strings, self-contained bundles and the Alpine musl RID, migration locking since EF Core 9, rolling back with a target migration, and why per-migration transactions do not save you on MySQL.

2026-07-28 maui dotnet-maui dotnet-11

How to use Shell route parameters and query properties for navigation in .NET MAUI 11

A complete guide to passing data through Shell navigation in .NET MAUI 11: registering global routes, string query parameters, QueryPropertyAttribute vs IQueryAttributable, the URL-decoding asymmetry between the two, single-use ShellNavigationQueryParameters vs the IDictionary overload that leaks, passing data backwards with ..?key=value, and why QueryPropertyAttribute is not trim safe.

2026-07-27 csharp dotnet dotnet-11

How to diagnose a managed memory leak with dotnet-gcdump and dotnet-dump

A complete workflow for finding a managed memory leak in .NET 11: confirm growth with dotnet-counters, take two gcdumps and diff them, then collect a dump and use dumpheap, gcroot, and objsize in dotnet-dump analyze to find what is still holding the reference.

2026-07-27 dotnet dotnet-11 csharp

How to publish a .NET 11 app as a container image with dotnet publish /t:PublishContainer

A complete guide to building container images from a .NET 11 app with no Dockerfile: the PublishContainer target, ContainerRepository and ContainerImageTags, base image selection through ContainerBaseImage and ContainerFamily, pushing to a registry and how authentication resolves, multi-arch OCI image indexes, the non-root default user, entrypoint control, tarball output for scanners, and the cases where you still need a Dockerfile.

2026-07-27 csharp dotnet dotnet-11

How to serialize a polymorphic type hierarchy with JsonDerivedType in System.Text.Json

A complete guide to polymorphic JSON in .NET 11: JsonDerivedType and JsonPolymorphic, why the declared type decides everything, the $type ordering rule, every exception the feature throws, the contract model for types you do not own, and what ASP.NET Core emits in OpenAPI.

2026-07-26 aspire dotnet aspnetcore

How to add Aspire to an existing ASP.NET Core solution without restructuring it

Add Aspire 13.4 to a brownfield ASP.NET Core solution by adding two new projects and three lines per service: aspire init, AppHost wiring with AddProject and WithReference, keeping your existing launchSettings.json and connection strings, and the resilience, health-endpoint, and proxy gotchas that bite on day one.