Start Debugging

Tag: dotnet

442 posts · Page 5 of 45

2026-09-28 quartz-net dotnet csharp

Quartz.NET 4.2 Turns Bad Cron Expressions into Build Errors

Quartz.NET 4.2.0 ships a Roslyn analyzer that rejects unparseable cron literals as QZ0001 at compile time, plus a source generator that turns [QuartzJob] and [CronTrigger] attributes into an AddDeclaredJobs() registration. Here is what it checks, what the generated code looks like, and how to opt out.

2026-09-27 ag-ui dotnet ai-agents

AG-UI .NET SDK 1.0: AGUI.Server and AGUI.Client Move the Protocol Out of Agent Framework

The AG-UI protocol now has a standalone .NET SDK: AGUI.Server 1.0.0 streams any IChatClient as AG-UI events over SSE, and AGUIChatClient consumes an AG-UI endpoint as an IChatClient, down to .NET Framework 4.7.2. Agent Framework users get renamed APIs.

2026-09-27 errors dotnet dotnet-10

Fix: MediaPicker.CapturePhotoAsync returns a PNG instead of a JPEG in .NET MAUI 10

On iOS, MAUI 10 re-encodes camera photos as PNG whenever CompressionQuality is 90 or higher and no MaximumWidth/Height is set, which includes the default. Set CompressionQuality to 89 or lower, or add a MaximumWidth on iOS only.

2026-09-26 dotnet ai microsoft-extensions-ai

Microsoft.Extensions.AI.OpenAI 10.10.1 Fixes the OpenAI 2.14 TypeLoadException

OpenAI 2.14.0 renamed GlobalMcpToolCallApprovalPolicy, which broke every tool-carrying Responses call through Microsoft.Extensions.AI.OpenAI 10.10.0. Version 10.10.1 moves to OpenAI 2.14.0 and also picks up the null reasoning status fix for OpenAI-compatible endpoints.

2026-09-25 refit httpclient dotnet

Refit 16.1 Writes Your Paging Loop: PagedEnumerable, [Paged] and [PageToken]

Refit 16.1.0 lets an interface method return PagedEnumerable<TPage, TItem>, and the source generator emits the request-per-page loop for cursors, offsets, response headers and next links. Here is how to declare it, how enumeration behaves, and the RF013 build error you get for a misspelled member.

2026-09-24 errors dotnet dotnet-10

Fix: HttpIOException: The response ended prematurely from HttpClient in .NET

HttpClient reuses a keep-alive connection the server just closed, or the server drops the connection mid-response. Lower PooledConnectionIdleTimeout below the server's idle timeout and retry only idempotent requests.

2026-09-24 nuget dotnet security

Microsoft Is Rotating Its NuGet Author-Signing Certificate: Fix trustedSigners Before NU3034 Hits

Starting September 23, 2026, Microsoft packages on NuGet get author-signed with a new certificate (SHA-256 9A1B131B...). If your nuget.config pins Microsoft in trustedSigners, restores will fail with NU3034. Here is the fix, including the correct dotnet nuget trust command.

2026-09-23 redis stackexchange-redis dotnet

StackExchange.Redis 3.3 Moves Off a Redis Node Before the Server Drops You

StackExchange.Redis 3.3.0 adds opt-in maintenance notifications (smart client handoffs) for Redis Enterprise, Redis Cloud and Azure Managed Redis: relaxed timeouts during migrations, topology re-reads, and a proactive move before an endpoint goes away. Here is how to turn it on and the SER010 error you will hit first.

2026-09-22 dotnet opentelemetry observability

OpenTelemetry .NET 1.19.1 fixes the wildcard NotSupportedException on net8.0

OpenTelemetry 1.19.0 switched its wildcard source regex to RegexOptions.NonBacktracking, which throws on net8.0 once you register enough sources. 1.19.1, released on September 21, 2026, goes back to a compiled regex with a match timeout.

2026-09-21 aspire kafka dotnet

Aspire 13.5.4 Stops Kafka Health Checks From Leaking a Producer on Every Probe

Before Aspire 13.5.4, every AppHost health check on an AddKafka resource created a new Confluent producer that nobody disposed, so polling threads piled up and the AppHost burned CPU. The fix, and the HealthCheckRegistration.Factory trap behind it, applies to your own health checks too.