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Questions tagged [.net-6.0]

For questions about Microsoft's .NET application development framework that are specific to version 6.0+ of the framework. Use only If your question are version-specific

For the original announcement of .NET 6, and for more detailed information, please refer to the official communication from Microsoft.

.NET 6 delivers the final parts of the .NET unification plan that started with .NET 5. .NET 6 unifies the SDK, base libraries, and runtime across mobile, desktop, IoT, and cloud apps.

is the next big release to the .NET family after .NET 5.

was released November 8th, 2021.

The first preview was made available on February 17th, 2021.

General Improvements :

In addition to this unification, the .NET 6 ecosystem offers:

  • LTS Release: .NET 6 is Supported for three years as the latest long term support (LTS) release.

  • Simplified development : Getting started is easy. New language features in C# 10 reduce the amount of code you need to write. And investments in the web stack and minimal APIs make it easy to quickly write smaller, faster microservices.

  • Better performance : .NET 6 is the fastest full stack web framework, which lowers compute costs if you're running in the cloud.

  • Ultimate productivity : .NET 6 and Visual Studio 2022 provide hot reload, new git tooling, intelligent code editing, robust diagnostics and testing tools, and better team collaboration.

Whats New :

  • C# 10 : All new C# 10 offers language improvements such as record structs, implicit using, and new lambda capabilities, while the compiler adds incremental source generators.

  • F# 6 : F# 6 adds new features including Task based async, pipeline debugging and numerous performance improvements.

  • Minimal APIs : Simplify getting started experience and HTTP services performance improvement.

  • Hot Reload : This feature enables you to skip rebuilding and restarting your app to view a new change — while your app is running — supported in Visual Studio 2022 and from the .NET CLI, for C# and Visual Basic.

  • .NET MAUI : .NET Multi-platform App UI (.NET MAUI) is still in preview, with a release candidate coming in the first quarter of 2022 and general availability (GA) in the second quarter of 2022. .NET MAUI makes it possible to build native client apps for desktop and mobile operating systems with a single codebase.

  • Blazor : ASP.NET Core in .NET 6 improves Blazor. Blazor components can now be rendered from JavaScript and integrated with existing JavaScript based apps.

  • File IO : File IO in .NET 6 has support for symbolic links and has greatly improved performance with a re-written-from-scratch FileStream.

  • Production stress-tested : Production stress-tested with Microsoft services, cloud apps run by other companies, and open source projects.

  • HTTP/3 : .NET 6 includes preview support for HTTP/3, a new version of HTTP. HTTP/3 solves some existing functional and performance challenges by using a new underlying connection protocol called QUIC. QUIC establishes connections more quickly, and connections are independent of the IP address, allowing mobile clients to roam between Wi-fi and cellular networks. For more information, see Use HTTP/3 with HttpClient.

Offical Links

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Trouble with using more than one JwtBearer authentication providers

I am trying to add the ability to use two different JwtBearer providers for authentication. One being Auth0 and the other being a custom one. I am testing the implementation with Postman, but I keep getting a Parse Error: Invalid character in chunk…
mmeadwell
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C#: How to log stack trace of AccessViolationException before application crash?

I have some unsafe methods may throw AccessViolationException, it will stop at the line of code with debugger attached. but if run the application without debugger, the application just crashes, cannot log the stack trance to file. Is there any way…
Lamp
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Error when connecting to a SAML 2.0 IdP that uses shibboleth

I am using the ITfoxtec Identity SAML 2.0 library with .Net 7 project to connect to a SAML 2.0 IdP. I tested it first using Okta SAML and it worked great! However, when I try another SAML 2.0 IdP that uses SAML 2.0 and shibboleth, I am getting the…
SkyeBoniwell
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WebApplication.Services.GetRequiredService Fails in Unit Test

I want to verify dependencies are properly configured for all Controllers in an ASP.NET 6 Web App. Assuming I have invoked .AddControllersAsServices(), I can call app.Services.GetRequiredService() from Main and it succeeds. public…
Jacob Foshee
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DataAnnotations Validator Class Not Replicating Implicit Required Check for Non-Nullable String

When using DataAnnotations to validate models for incoming controller requests, non-nullable reference types are implicitly treated as required unless you declare them as nullable (i.e. string? instead of string). public class MyExampleModel { …
Doctor Blue
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Could not resolve System.Data.SqlClient assembly in net6 application migrated from net fr 4.6

everybody. I have next issue/problem. I have migrated my project (dll target, not exe) from netfr 4.6 to net6. Everything looks fine, there are almost no code changes. But when I try to use my built dll it could not resolve referenced assemblies:…
Sergey Alikin
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Sqlite with EFCore version 7.0.0 does not load database for in-memory connections. Fails with 'SQLite Error 1: ''.' at EnsureDeleted()

For Unit Testing, I am using EFCore SQLite in-memory db and creating schema as per the MS docs, but when the code attempts to execute EnsureDeleted(). It fails at with exception 'SQLite Error 1: ''.' Not much details are provided in the exception…
AmarWankhede
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How to get Process.Start to start a separate process for a console application?

I was under the impression that Process.Start() would more or less function the same as double clicking a .exe with the caveat that you can't pass cmdline parameters via double click. So when I told my console application to start other console…
Alexander Ryan Baggett
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Intermitent "The signature key was not found" error

I've read plenty of articles and Q&As regarding this and similar errors, but the scenario I face is truly puzzling, so I'm creating this question to, at the very least put my thoughts in order: We have a .NET 6.0 which is set-up to use bearer JWT…
Sebastián Vansteenkiste
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Graceful way of allowing one of two allowed values in string C#

I have a request class which has the following property /// /// First time discount flag /// [JsonProperty("firstTimeDiscountFlag")] public string FirstTimeDiscountFlag { get; set; } I am…
MAK
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How to add ServerCertificateCustomValidationCallback in a HttpClient Injection on NET6?

How to add ServerCertificateCustomValidationCallback in a HttpClient Injection on NET6? I'm stuck on below program.cs: builder.Services.AddHttpClient(c => { c.BaseAddress = new Uri("https://iot.test.com/api"); …
FBDon
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For a GRPC Service in NET 6, Postman is showing bool properties as [] when they have a false value

If I use bool as type in the proto file Postman doesn't even show the property, if I use google.protobuf.BoolValue as type it shows "is_valid": {} when is_valid = false in C#, but it works when is_valid = true, so why it doesn't show anything when…
JCIsola
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MethodBase.GetMethodInfo() returns MoveNext

In Visual Studio 2022, I've written the following C# (.NET 6) code (in case it matters, it's in a non-generic class derived from a generic base class): private async Task MyMethod() { var method = MethodBase.GetCurrentMethod()!; string…
Green Grasso Holm
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NET 6: Controller method is not reachable

I have a simple NET 6 application. added a controller and trying to test. Run it, I see method on Swagger page, execute the method in Swagger, it returns 200, but it does not return "Hello World". Then I have added logger output to the controller…
ZedZip
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Windows Authentication with .net 6 (Negotiate) not working - how can I debug?

I have created a very small sample project with .net 6 and enabled kerberos/ntlm authentication by setting the following line in the startup: services.AddAuthentication(NegotiateDefaults.AuthenticationScheme).AddNegotiate(); This is just working…
marco birchler
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