Omnisharp on Strathweb. A free flowing tech monologue.

Hello OmniSharp on .NET 6.0!

Mon, 31 Jan 2022 18:31:34 +0000

On December 15, 2021 we released version 1.38.0 of OmniSharp which, for the first time, included .NET 6.0 builds of the OmniSharp server. The related feature branch was maintained for over a year, and previously contained a .NET 5-based variant of OmniSharp, though that one was never released.

This is a big milestone in the OmniSharp project as the .NET 6.0 build is much faster and a lot more stable, and is the first step towards retiring the .NET Framework/Mono builds of OmniSharp.

Support for unimported types in Omnisharp and C# Extension for VS Code

Mon, 07 Sep 2020 14:54:54 +0000

Some time ago I blogged about new Omnisharp features - support for analyzers and support for Editorconfig. Those were at the time two of the most requested features on Github that we had. Today I wanted to let you know that we just shipped another one of those hugely requested functionalities - support for unimported types. In fact, since those previous two have been dealt with, this was the most requested feature that we had.

Semantic highlighting in OmniSharp and C# extension for VS Code

Wed, 17 Jun 2020 08:07:16 +0000

Two days ago I blogged about doing semantic classification of C# code using Roslyn. Today, I wanted to draw your attention to a new feature we have recently shipped in OmniSharp and which is now available as experimental feature in C# extension for VS Code, and that’s improved OmniSharp semantic highlighting.

Decompilation support in OmniSharp and C# Extension for VS Code

Thu, 07 May 2020 19:26:44 +0000

One of the nice new features that we shipped in OmniSharp recently, and that has already made its way into the C# Extension for VS Code is support for decompilation. It was released in April as part of 1.35.0 release of OmniSharp. Let’s have a quick look at how you can get it up and running.

.NET 5 preview support in OmniSharp and C# Extension for VS Code

Fri, 27 Mar 2020 15:45:38 +0000

As we all know, we have recently been spoiled with the first preview release of .NET 5. Additionaly, Preview 2 is just around the corner and is already available via dotnet-install scripts.

While it’s still early days, we would want that OmniSharp users can work with .NET 5 as soon as possible, so we have just added support for .NET 5 in OmniSharp.

Let me quickly walk you through what you need to do to take advantage of that.

Hidden features of OmniSharp and C# extension for VS Code

Thu, 13 Feb 2020 19:41:07 +0000

OmniSharp powers intellisense and language services in C# plugins and extensions for numerous editors, including VS Code. When we build things into OmniSharp, we typically try to keep things lightweight (of course if the term “lightweight” applies to anything related to MSBuild…) and non-invasive. This means that many features/tweaks are actually opt-in by default, and wouldn’t normally show up on their own.

In this post I wanted to show you a few of such less known features.

Enforcing C# EditorConfig formatting conventions at build time

Sun, 26 Jan 2020 07:40:29 +0000

EditorConfig is an excellent way to enforce stylistic rules on your C# projects. However, the rules and their corresponding IDExxxx diagnostics are only enforced in the editor, such as Visual Studio or VS Code with OmniSharp, but not at build time.

While there are various categories of EditorConfig conventions that you can use, in this post, I will show you how to enforce the formatting conventions (IDE0055) at build time.

dotnet-script 0.50 is out – with support for .NET Core 3.0!

Mon, 14 Oct 2019 13:49:22 +0000

We have some exciting news to announce - dotnet-script is now supporting .NET Core 3.0.

We released the new version 0.50.0, with .NET Core 3.0 support already on September 25th, two days after .NET Core 3.0 went RTM, but kept quiet about it. The reason was that a large part of the scripting experience is the tooling in OmniSharp and the C# Extension for VS Code, and that had to be updated accordingly too.

EditorConfig support in OmniSharp and C# extension VS Code

Thu, 25 Jul 2019 10:33:17 +0000

Recently, I blogged about Roslyn analyzers support in OmniSharp and C# extension VS Code and some background on how that feature came together.

Today I am pleased to announce that in the latest OmniSharp release - 1.33.0, where we have shipped another large feature (in fact, the 2nd most requested feature in OmniSharp repo, after, well, analyzers) and that is support for EditorConfig.

Between then, and the time it took me to finally write this post, we actually have 1.34.0 which is even better - and is in fact included in the corresponding release 1.21.0 of the C# extension for VS Code.

More after the jump.

Roslyn analyzers and code fixes in OmniSharp and VS Code

Tue, 30 Apr 2019 20:10:17 +0000

Recently we merged a big (albeit still experimental) feature into OmniSharp - the support for Roslyn analyzers.

I wanted to take a few moments today to discuss this feature with you, share some background info, show you how to get it enabled and share some plans for the next steps.

Using Roslyn refactorings with OmniSharp and Visual Studio Code

Tue, 30 May 2017 09:32:50 +0000

One of the features that we added to a recent OmniSharp release (which, as a reminder, backs the C# language services in various editors), and that quietly shipped in C# for Visual Studio Code 1.10.0 last week, was the ability to use external Roslyn refactorings.

Before, OmniSharp shipped with some built-in Roslyn refactorings (i.e. move type to file) but this new feature allows a user to import custom refactorings - either self- or 3rd-party built.

It’s still an experimental feature, so it needs to be switched on manually, but hopefully it can provide you some much neeeded productivity boost.

Let’s have a look at how that’s done.

C# code formatting settings in VS Code and OmniSharp

Mon, 16 Jan 2017 14:55:55 +0000

I quite often get or see questions about configuring C# code formatting settings for Visual Studio Code.

OmniSharp (the open source Roslyn-based technology that powers C# language services) in VS Code exposes a rich set of code formatting settings which you can use to tailor and customize your C# experience.

Let’s have a look at how you can use them.

OmniSharp Canada Tour 2016

Thu, 18 Feb 2016 04:04:35 +0000

I’ve said it a couple of times already, but I sincerely believe that the OmniSharp project is one of the most important projects in the history of .NET. Having an alternative to the “dictatorship” of Visual Studio is fundamentally important to the health of the .NET ecosystem, and OmniSharp has done a tremendous job in that sense (thanks, Jason & David). Fro my side, I’ve been trying to support the project as much as I can - by contributing, speaking or blogging about it, trying to spread the love.