Briefs

You can subscribe for Metalama's briefs with RSS.

05/30/2025 · Blog Post

Metalama Status Update, May 2025

May is a time of growth and renewal, and Metalama is no exception. At the start of this month, we began a new chapter by open-sourcing our codebase, marking one of the most significant contributions to the .NET community this year. Throughout May, we focused on stabilizing our first open-source release, improving compliance with supply chain security and transparency best practices, and participating in the Open Source Founder Summit in Paris.

05/29/2025 · Brief

Metalama 2025.1.9 released - critical VSX bug fix

We’ve released Metalama 2025.1.9 with a critical bug fix of Metalama + PostSharp Visual Studio Extension. See the GitHub release.

05/26/2025 · Brief

Metalama 2025.1.8 released - critical bug fix

We’ve released Metalama 2025.1.8 with a critical bug fix and more minor improvements. See the GitHub release.

05/22/2025 · Brief

Metalama 2025.1.7 released, merging Roslyn 4.14

We’ve released Metalama 2025.1.7, with minor improvements and merge of Roslyn 4.14. See the GitHub release.

05/15/2025 · Brief

Metalama 2025.1.6 released

We’ve released Metalama 2025.1.6, with minor improvements and important bug fixes. See the CHANGELOG.

05/14/2025 · Brief

Metalama now has the OpenSSF Best Practices Badge.

Metalama has earned the OpenSSF Best Practices Badge, demonstrating adherence to key open-source security and quality standards. For a detailed breakdown of the criteria met, visit our badge page.

05/12/2025 · Brief

We're now publishing brief updates.

As we are closing our Slack workspace, we will publish briefs (typically announcing builds) on this website instead. We’ll keep briefs separate from long-form articles published on our blog. You can subscribe to briefs using RSS or JSON Feed from this page.

04/04/2025 · Blog Post

Metalama Is Now Open Source, Adding Full Meta-Programming to C#

We’re excited to announce that Metalama, the most advanced meta-programming framework for C#, is now open source! Released under the permissive MIT license, Metalama empowers .NET developers with a simple, innovative, and powerful approach to code generation, architecture validation, and aspect-oriented programming.

03/31/2025 · Blog Post

Metalama Status Update, March 2025

This month, we released a preview of Metalama 2025.1, marking a significant milestone as the first open-source version of Metalama. Our efforts to complete the open-source transition will continue in April.

02/27/2025 · Blog Post

Metalama Status Update, February 2025

Last month, we shared our exciting plans to make Metalama open-source, and throughout February, we’ve been hard at work making it happen. While we’ve made significant technical progress, we’re not quite ready to release just yet.

01/31/2025 · Blog Post

Metalama Status Update, January 2025

As we returned from the winter break, we hit the ground running by launching Metalama and PostSharp 2025.0. But that wasn’t all—after careful consideration and experimentation, we’re thrilled to share some groundbreaking news: Metalama is going open-source!

01/29/2025 · Blog Post

Enhancing Godot Development with Metalama

Godot is an amazing open-source game engine that provides developers with the tools to build games efficiently. While GDScript is Godot’s native language, many developers prefer to use C# for its rich ecosystem and the ability to leverage third-party libraries. One such library is Metalama, a powerful metaprogramming framework that can streamline repetitive or error-prone tasks.

01/27/2025 · Blog Post

Metalama 2025.1 Will Be Open-Source

We’re thrilled to announce that Metalama, the most complete and innovative meta-programming framework for .NET, will soon become a free and open-source project. This is a major milestone for us and the .NET community, and we’re excited to share our plans and gather your feedback as we move forward.

01/04/2025 · Blog Post

Metalama 2025.0 Generally Available: Support for C# 13 and .NET 9, Aspect Framework Improvements, and More

Metalama 2025.0 is now generally available! This release supports C# 13 and .NET 9, adds significant enhancements to the aspect framework, and boosts performance substantially.

12/18/2024 · Blog Post

Hi-Res Logging in .NET Aspire Without Touching Business Code

This article will explore how to trace method calls in a .NET Aspire app without boilerplate code using Metalama. It uses a base example of a to-do list app with an ASP.NET Core Minimal API backend and a Blazor front-end, orchestrated using .NET Aspire. During the article, we’ll demonstrate how to log all public methods of the app using the [Log] aspect with a special kind of class called a fabric. The article will also show how to analyze the logs using the .NET Aspire dashboard.

12/09/2024 · Blog Post

The State of Aspect-Oriented Programming in C# [2025]

Aspect-oriented programming (AOP) was invented in the early 2000s and enjoyed a few years of hype. Althought it has been implemented in many languages, it seems to have faded in the background. Even Metalama, the most comprehensive AOP framework for .NET, does not primarily market itself as an AOP framework. What ever happened to AOP, and what is its status in the .NET world today?

12/01/2024 · Blog Post

Metalama Status Update, November 2024

The focus this month for the whole community was on Microsoft’s release of .NET 9. Almost immediately, we published the RC builds of Metalama and PostSharp 2025.0 to support the new stacks. After running our reference performance test suite, we’re thrilled to announce significant performance improvements in Metalama 2025.0.

11/28/2024 · Blog Post

Metalama Performance Improvements Analysis [Updated for 2025.0]

Starting from Metalama 2024.1, we’ve spent significant effort to optimize performance. After a thorough analysis of the benchmarks, we’re excited to report that Metalama’s performance has more than doubled, typically just adding 25-35% to the standard build time.

11/21/2024 · Blog Post

Implementing WPF dependency properties with Metalama

When building user controls in WPF, it’s best practice to expose dependency properties in addition to normal C# properties. Unfortunately, implementing custom dependency properties requires a fair amount of redundant code. In this article, we’ll explore how to use Metalama to eliminate this boilerplate code.

11/04/2024 · Blog Post

Implement ICommand with Metalama

This article explores the use of the ICommand interface in a temperature monitor application, contrasting manual and automated approaches using Metalama. Initially, it details how to manually create commands for operating a temperature sensor, highlighting the repetitive coding and potential for errors. Then, it introduces Metalama and its [Command] aspect to automatically generates the necessary boilerplate code for ICommand implementations. The comparison reveals that Metalama minimizes manual effort and errors, enhancing development efficiency.