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Tag: dotnet-10

104 posts · Page 5 of 11

2026-09-13 dotnet-maui android maui-shell

How to intercept the Android back button on a .NET MAUI Shell root page

Override OnBackButtonPressed on the root page and run .NET MAUI 10.0.101 or later. Why root pages stopped receiving back presses from 10.0.70 (Android 16) and 10.0.100 (every Android version), why .NET 11 RC 1 is still affected, why Shell.OnNavigating and BackButtonBehavior.Command do not help, and a MainActivity workaround for the broken versions.

2026-09-10 errors blazor blazor-webassembly

Fix: IsAuthenticated is false and RemoteUserAccount is null in Blazor WebAssembly after an MSAL upgrade

Microsoft.Authentication.WebAssembly.Msal 10.0.8, 9.0.16 and 8.0.27 moved to msal.js 4, whose async init races itself. Initialize MSAL once in Program.cs, or pin 10.0.7.

2026-09-10 errors ef-core ef-core-11

Fix: PublishAot plus EFOptimizeContext exhausts memory during an EF Core build

EF Core's build-time model generation re-entered MSBuild until RAM ran out. Upgrade Tasks and Design to 10.0.10+, and on EF Core 11 delete EFOptimizeContext.

2026-09-09 errors ef-core ef-core-11

Fix: AS JSON option can be specified only for column of nvarchar(max) type in WITH clause

EF Core emits [col] json '$.path' AS JSON inside OPENJSON WITH, which Azure SQL rejects with Msg 13618. Upgrade to EF Core 10.0.11+, or drop the provider compatibility level to 160.

2026-09-09 errors ef-core ef-core-11

Fix: Complex entry original ordinal '-1' is invalid when saving a ToJson complex collection

Upgrade Microsoft.EntityFrameworkCore to 10.0.10 or later. Before that, growing a nested collection under a second ToJson complex property crashed SaveChanges.

2026-09-09 errors ef-core ef-core-11

Fix: The complex type collection must be initialized to a non-null value

On EF Core 10.0.x, nulling a complex property that holds a two-element collection inside a ToJson complex collection breaks DetectChanges. Fixed in 11.0.0-rc.1.

2026-09-08 errors ef-core ef-core-11

Fix: MissingMethodException 'AbstractionsStrings.ArgumentIsEmpty' after upgrading EF Core Tools

dotnet ef throws MissingMethodException on ArgumentIsEmpty because Tools 10.0.6 stopped pulling a matching Microsoft.EntityFrameworkCore.Design. Pin Design explicitly to your EF Core version.

2026-09-04 migration maui android

Migrate a .NET MAUI Android app to target Android API level 36

Google Play required target API 36 from 2026-08-31, with extensions running to 2026-11-01. Here is the full .NET MAUI path from net9.0-android to API 36: the target framework bump, the hardcoded uses-sdk that silently pins you to the old level, edge-to-edge with no opt-out, predictive back, and the large-screen orientation rules.

2026-09-02 migration binaryformatter serialization

Migrate off BinaryFormatter after its removal in modern .NET

BinaryFormatter's implementation was deleted in .NET 9 and still throws PlatformNotSupportedException on .NET 10 and .NET 11: how to choose a replacement serializer, read already-persisted NRBF blobs with NrbfDecoder, and what breaks in WinForms, WPF, and ResX.

2026-08-30 errors ef-core maui

Fix: Model building is not supported when publishing with NativeAOT in a .NET MAUI iOS build

iOS builds set DynamicCodeSupport=false, so EF Core refuses to build the model even though you never enabled NativeAOT. Ship a compiled model plus precompiled queries, or turn the interpreter back on.