We are pleased to announce the release of .NET 9 Preview 7.

Spark is an open source computing framework for Big Data, and it’s becoming increasingly popular, especially in machine learning scenarios. In this article I’ll describe how to install Spark on a machine running a Windows OS, and explain basic Spark functionality from a .NET developer’s point of view. 

I’ve been at ThoughtWorks for 12 years. Who would have imagined? Instead of writing about my reflections from the past year, I thought I would do something different and post twelve key learnings and observations looking back over my career. I have chosen twelve, not because there are only twelve, but because it fits well with the theme of twelve years. 

ReSharper 2020.3: Support for C# 9 and Source Generators, New Features in Inlay Hints, and Support for Avalonia UI 

Last Friday, ASP.NET Core quietly switched from supporting .NET Standard 1.* and .NET 4.* to only supporting .NET Core 2.0. This means that ASP.NET Core 1.0/1.1 applications running Mono or the full .NET Framework will not be upgradable to ASP.NET Core 2.0 when it is released in 2-3 months. 

Webinar agenda:

0:00 – Introduction
0:55 – OSS in the .NET Community
3:00 – Welcome, Jeremy and FluentValidation
6:17 – OSS Power-Ups
8:11 – Rider plugin for FluentValidation
9:07 – Introduction to FluentValidation
13:36 – Custom validation messages and placeholders
18:33 – Cross-property validation
21:17 – Nested and compositional validation
25:57 – Validator extensions
31:40 – Unit testing validators
51:25 – ASP.NET Core integration
1:03:35 – Synchronous and asynchronous validation
1:07:33 – Q&A and wrap-up
 

.NET 6 will reach end of support on Nov 12, 2024. After that, Microsoft will no longer provide updates for .NET 6. Security fixes and technical support will no longer be available for .NET 6. You’ll need to update to .NET 8 before this date to stay supported.

This article is about creating ASP.NET Core applications, using Visual Studio Code and .NET Core. After this article, you will be able to create applications, using Visual Studio Code in .NET Core

Action<object, EventArgs> handler1 = (object obj, EventArgs args) => ShowDialog();

Action<object, EventArgs> handler2 = (object _, EventArgs _) => ShowDialog();
// OR
Action<object, EventArgs> handler3 = (_, _) => ShowDialog();

button1.Click += (s, e) => ShowDialog();

 button1.Click += (_, _) => ShowDialog();

namespace CS9Features
{
    public class LambdasTests
    {
        public void Test()
        {
            string text = "{0} is a good user !";
            PrintItems(item => string.Format(text, item));
        }

        private void PrintItems(Func<string, string> formatFunc)
        {
            foreach (var item in new[] { "User 1", "User 2" })
            {
                Console.WriteLine(formatFunc(item));
            }
        }
    }
}

const string text = "{0} is a good user !";
PrintItems(static item => string.Format(text, item));