In this post I described the problem that by default, DataAnnotation validation doesn't recursively inspect all properties in an object for DataAnnotation attributes. There are several solutions to this problem, but in this post I used the MiniValidation library from Damian Edwards. This simple library provides a convenience wrapper around DataAnnotation validation, as well as providing features like recursive validation. Finally I showed how you can replace the built-in DataAnnotation validation with a MiniValidation-based validator

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddOptions<MySettings>()
    .BindConfiguration("MySettings")
    .ValidateMiniValidation() // 👈 Replace with mini validation
    .ValidateOnStart();

var app = builder.Build();

OptionsValidationException: 
  DataAnnotation validation failed for 'MySettings' member: 'Nested.Value' with errors: 'The Value field is required.'.; 
  DataAnnotation validation failed for 'MySettings' member: 'Nested.Count' with errors: 'The field Count must be between 1 and 100.'.
Microsoft.Extensions.Options.OptionsFactory<TOptions>.Create(string name)
Microsoft.Extensions.Options.OptionsMonitor<TOptions>+<>c__DisplayClass10_0.<Get>b__0()

In this article, we will learn:
What is a Task in C# ?
Properties of Task class
Different Methods in Task class
How to create a Task in C#?
Return a Value from Task
Attaching Child Task to Parent Task
Task Factory

• InvalidOperationException Writing is not allowed after writer was completed
• ICE on valid code after upgrading to 16.2.0
• CPU Usage Tool context menu does not navigate
• Wrong assembly when result of conversion operator is converted to reference to base class.
• DockerUpdateComposeVsGeneratedFiles throws "Value cannot be null" ("Parameter name: path1") after updating to Visual Studio 16.3
• CPU Usage Tool contect menu does not navigate.
• InvalidOperationException Writing is not allowed after writer was completed.
• Publish doesn't work in Visual Studio 16.3.1.
• This fixes an issue with the Snapshot Debugger where customers are using MSA accounts.
• Fixed an issue where customers trying to install Microsoft.Visualstuio.Shell.15.0 NuGet package received a warning message of Framework not found.
• Fixes MSVC compiler bug involving implicit conversion from a lambda to function pointer.
• Fixed issue with Visual Studio crashing due to null reference exception.
• A fix is made to address a compiler interal error when the code has a out-of-line definition of a static data member of a nested class inside a partial specialization. 

curl to C# converter 

C# to GO

The last update was on 06/12/2013 and that wasn’t even a planned update. 

What's new in this release?

• Full C#7.0 support
• .NET Core support