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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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Azure Devops Pipeline Docker Build

my question is how to build a docker in the build pipeline with different environments depending on the pull request/branch. I use .net6 and Key Vault + Variable Groups. As I know when the docker builds the image he uses appsetings.json. If I don't…
Vladimir Petukhov
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NU1102 Unable to find package Microsoft.WindowsDesktop.App.Ref with version (= 6.0.12)

create a brand new asp net core web api in visual studio 2022 version (17.4.1) targeting .net 6 the solution won't build, and we got this error Error NU1102 Unable to find package Microsoft.WindowsDesktop.App.Ref with version (= 6.0.12)
toumir
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CastleWindsor dependency injection in .NET 6

we try at the moment to migrate an application from a very old .NET Core 1.1 to .NET 6. In this application we are using CastleWindsor 4.1.1 as dependency injection framework. Now we are at the point where we have to write the initialization to the…
mburm
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Localization of DataAnnotations errors, can't set ErrorMessageResourceType

I'm trying to localize my model errors from Resources, in .net 6 mvc app. I set up localization like this: `builder.Services.AddLocalization(options => options.ResourcesPath = "Resources"); builder.Services.AddMvc() …
OkiOki
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Exception unhandled when I upgrade .NET Core 3.1 to .NET 6

I upgraded a project from .NET Core 3.1 to .NET 6 (Web API). Then I fixed errors and applied new syntax as documented by Microsoft. Also, when I start the project in debug mode, it shows this exception in …
The Duy
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Asp.net Core 6: Missing reference from Package ZXing.Net.Maui Barcode Scanner

Can somebody help me with a problem I can't seem to resolve? I'm trying to set up a barcode scanner in MAUI via the package ZXing.Net.Maui that I found in a tutorial on Youtube: https://www.youtube.com/watch?v=ostgj2xB_ok&ab_channel=GeraldVersluis I…
Arno Slabbinck
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.Net 6 Blazor WebAssembly App api is not working without debugging mode but working in debugging mode

.Net 6 Blazor WebAssembly App api is not working without debugging mode but working in debugging mode. enter image description here without debugging mode getting the following error: enter image description here And also api not working after…
Nazrul
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why aspnet serviceprovider return wrong result?

I have a problem in regard to understand asp net core service provider. I register a service type with a non-generic concrete and an open generic registration, AddTransient(typeof(IBase), typeof(Base)); AddTransient(typeof(IBase<>),…
Milad
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System.Text.Json Custom JsonConverter Write() never called

I have a .NET 6 solution for which I'm trying to override the default format of DateTimeOffset's when calling JsonObject.ToJsonString(). This is all using the native System.Text.Json libraries. I've added a custom DateTimeOffsetConverter: public…
Gavin
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Decimal separator is changing back to a dot after navigating to another page

For my web application I want the prices to have a comma as decimal separator on all my pages of my web application. I managed this by adding these line of codes in the program.cs: CultureInfo.CurrentCulture = new…
Cornelis
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.Net Web Api : consistent Json deserialization strategy between the API and a file upload?

I have a Asp.Net 6+ Web Api that has two endpoints doing almost exactly the same thing : - the first one gets its parameters automagically from Asp.Net . I didn't give it a second thought: it accepts parameters from the POST's body and it's Asp.Net…
jeancallisti
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How to set environment variables via publish profile in .NET Core console app?

I have a .NET Core worker service app, I have different appsetings.json files like appsetings.Dev.json, appsetings.Prod.json etc. I want to load these appsettings file based on the environment variables provided via either Publish Profiles or…
Sultan
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aspose pdf v 21.8 only work till .net 5, After upgrade to .net 6, I don't want to upgrade aspose pdf version

License license = new License(); license.SetLicense("MyLicence"); //get exception system.Exception How to resolve this issue?
dheeraj ambippi
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How can you carry out Outlook Interop Actions (such as reading emails) within C# .NET 6.0

I am having great difficulty attempting to read emails out of my Default Inbox using Interop in C# .NET 6.0. I have an application that currently utilizes Interop to read the users most recent emails from their Outlook, this application utilizes…
Bumblehound
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System.Text.Xml and Generic objects produce exception "Compiling JScript/CSharp scripts is not supported"

Let's start with the following code (Please note the commented-out block): public sealed class AnotherTest { public sealed class MyBagContainer { [XmlArray("Bag", Namespace = "myNs"), XmlArrayItem("li", Namespace =…
Andy
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