In immediately reaction to the release of Revit 2026, DA4R and RevitLookup follow suite – The Lookup Foundation – RevitLookup 2026 – Dashboard, Summary, Settings pages – Unit and Modules dialogues – LookupEngine – Design Automation API for Revit 2026 – Vibe programming Revit macros – Direwolf fast Revit data extraction – From floppies to a memory stick... Read more →
.NET
April 03, 2025
February 05, 2025
Tools for Extensible Storage and OAuth Auth0
Revit API tools for extensible storage and OAuth Auth0, notes on AI news, a Mac feature and electrical energy storage – SchemaMigrations extensible storage lib – OpenAI ChatGPT deep research – OAuth Auth0 in a Revit add-in – Docling markdown generator – MacOS copy paste sans formatting – DIY open source redox flow battery... Read more →
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January 28, 2025
API Context and Extensible Storage in DA4R
A solution to use extensible storage in the APS Design Automation for Revit API – Check for valid Revit API context – External service enables extensible storage in DA4R – PackageBuilder versus RevitAddinUtility – Two ways to determine elements in section view – Python and .NET – Opting out of cookies... Read more →
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November 07, 2024
DevCon, AI for Revit API, Modeless Add-Ins, Leave
I will be away a most of the rest of this year, and leave you with the following exciting mix of very good and very bad news – DevCon Europe call for papers – Retirement and away on leave – ChatGPT for Q4R4 – First LLM forum solution – Modeless WPF add-in sample and tutorial – The bitter lesson – Brain drain: David vs Goliath – AI effects on human creativity – HTML for people – UN climate change efforts off track... Read more →
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September 26, 2024
RevitLookup 2025.0.9
New versions of RevitLookup are available, and AI influence observable – RevitLookup 2025.0.9 – Revit.ini file editor – Dependency conflict static analyzer – Public RevitLookup roadmap – Other improvements – RevitLookup 2025.0.10 – LLMs influence academic language... Read more →
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September 06, 2024
Element Visibility and Multi-Version Add-In Code Base
Current and recurring topics from the Revit API discussion forum, an LLM and a cultural colour topic – Multi-version add-in code base – UIView for element visibility – GPT reads PDF + generates ACC issues – My blue vs. green ... Read more →
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July 03, 2024
Material Assets, Chromium and Sorting Schedules
Material assets, built-in browser functionality, create schedules, search text and miscellaneous LLM-related news items
– Personalised material asset properties
– CefSharp versus WebView2 embedded browser
– Twentytwo on schedule creation
– Ugrep enhanced grep
– AI mesh understanding
– LLM self-reflection, deep stupidity, sans MatMul, and locally the easy way...
Read more →
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June 27, 2024
Length Query and RevitLookup Heralds DLL Paradise
New RevitLookup solves Revit add-in DLL hell, and a clarification on the arc length properties provided by curve elements – Curve Length versus ApproximateLength – RevitLookup dependency isolation ends DLL hell – Add-in dependencies isolation... Read more →
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June 13, 2024
RevitLookup Geometry Visualisation
New RevitLookup BIM element geometry visualization, and 1000 GitHub stars – Versions 2025.0.5, 2025.0.6 and 2025.0.7 – Wiki... Read more →
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June 10, 2024
Removing Docs Zip Files, Panels and Buttons
A call for feedback on a planned change downloading a RCM from Docs, a tricky solution to remove ribbon panels and buttons, and a bunch of news bites that I found interesting on sustainability, language and AI discoveries; new EU AEC energy ruling, ecological wooden buildings in Scandinavia, spoken human language speed and information density, AI uses as a hearing aid enhancement, weather forecasting, interface assistant, AI open-source and future directions... Read more →
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June 05, 2024
Revit 2025 API Video and Hiding Linked Elements
The video recording on what's new in the Revit 2025 API has been released, and we discuss a nice example combining element pre-selection and PostCommand – Revit 2025 API video – Hiding linked elements... Read more →
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May 09, 2024
Migrating VB to .NET Core 8 and AI News
Revit 2025 API migration of VB.NET add-ins to .NET Core 8 and advances in LLMs and AI, Claude, ChatGPT, Gemini, Meta AI, 3D genAI, web scraping, spatial referring, digital twins... Read more →
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April 17, 2024
Migrating from .NET 4.8 to .NET Core 8
The Revit 2025 API is based on .NET Core 8, upgrading from the previous .NET 4.8 framework – .NET Core migration webinar recording – Revit API .NET Core migration guide... Read more →
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April 08, 2024
The Building Coder Samples 2025
I migrated The Building Coder samples to Revit 2025 – Compilation environment – .NET upgrade assistant – Revit API assemblies – Errors and warnings – Conclusion... Read more →
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April 05, 2024
Revit 2025 and RevitLookup 2025
Revit 2025 has been released and the new Revit API is now based on .NET Core – PackageReference versioning support – RevitLookup 2025 – Revit developer starter kit – Revit 2025 macros with Visual Studio 2022 – Cheap Chinese AI chip... Read more →
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March 29, 2024
Change Pipe Level and PreviewControl Border
Picking up two illuminating conversations from the Revit API discussion forum, we look at spying to suppress the PreviewControl border and changing the level of piping elements...
Read more →
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March 19, 2024
Camera Settings, Doors Traversed, Script on the Fly
New exciting Revit API solutions and furious pace of LLM development – Bowerbird C# scripting for Revit – Doors traversed by path of travel – Camera mapping between APS and Revit – Claude 3 can see – Devin, an AI software engineer – Meta Imagine generates images – An LLM for decompiling binary code – Simple climate change overview... Read more →
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February 08, 2024
.NET Core, C4R Views and Interactive Hot Reloading
Importing cloud-based APS parameters in desktop project, pondering .NET Core, publishing views the cloud, and hot tips for hot reloading for interactive Revit API testing and debugging – APS parameters API Revit import – .NET Core migration webinar recording – C4R publish view to cloud API – Revit polyglot notebook – Hot reloading in Visual Studio With Dynamo and Revit – Assigning invisible graphics linestyle – ChatGPT system prompt – RIP John Walker... Read more →
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December 21, 2023
Parameters and .NET Core Webinar
Let's end this year with some notes on parameters and a reminder of the upcoming shift to .NET Core – .NET Core migration webinar – Adding a parameter with a specific GUID – Getting started with the parameter service – Happy holidays! ... Read more →
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December 12, 2023
3D View, Curved Section and Browser Round-Trip
RevitLookup update, roundtrip interaction between your own browser instance and external command, BIM element location, structural 3D view, curved section view – RevitLookup 2024.0.10 – Calling Revit command from Chromium browser – Chromium browser Js round trip callback – Element location – Create a structural-only 3D view – Creating a curved section in Dynamo – Carbon footprint of AI – Sending data by pigeon – Permaculture farm – The Valley of Code... Read more →
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November 24, 2023
.NET Core Preview and Open Source Add-In Projects
Open-source related discussions, interesting Revit API and AI related news – Revit preview release with C# 7 – RevitLookup 2024.0.9 is here – RevitPythonDocs for Dynamo and pyRevit – New Revit SDK sample browser and launcher – Purge add-in with rave reviews – SpeedCad tools OptionsBar and StatusBar – Managing multiple Revit API versions – DesignScript, Rhino, and other geometry libraries – Trading glass beads for AI IP... Read more →
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November 14, 2023
Journal Magic, Adjacent Rooms and Room Boundary
Taking a look at journal files, room boundaries, adjacent rooms, a ForgeTypeId question and where AI might lead – Harry's journal file magic – Closed contiguous room boundary loop – Challenges identifying adjacent rooms – ForgeTypeId for 'Other' parameter group – AI may obsolete all apps... Read more →
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October 25, 2023
DLL Paradise and a Fall
APS overview – DLL paradise for Revit add-ins via named pipe IPC – Interprocess communication strategies and best practices – Using named pipes to communicate between different .NET versions – Interactions between .NET 4.8 and .NET 7 – Server / client transmission protocol – Connection management – Two-way communication... Read more →
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September 25, 2023
OptionsBar and Bye Bye to DA4R 2018
A great new open-source productivity enhancement tool making use of the built-in OptionsBar provides handy access to frequently used information, utilities, element selection options and more, and a reminder of the deprecated DA4R Revit 2018 engine... Read more →
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September 01, 2023
Add-In Threads and Geometry Comparison
Deep Revit API questions requiring clarification and a simple database connection issue resolved
– Add-in threads
– GeometryObject comparison methods
– Accessing Access
– The INTERCAL programming language...
Read more →
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August 04, 2023
Resx Language Management and APS DevCons
The Autodesk Platform Services APS Developer Conferences are coming up, and we all need to deal with application localisation and i18n issues – Resx language management – Ribbon panel localisation – Creating the localised WinForms... Read more →
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May 09, 2023
Dark Icons, NewFamilyInstance and AI News
Hacks for dark icons supporting Revit 2024 theme switching and news from the ever-accelerating AI revolution
– Dark theme icons by ImageMagick
– Embed dark theme icon name in BitMapSource
– New NewFamilyInstance overload
– Open-source AI surging ahead
– Timeline of major milestones crossed
– Non-technical explanation of AI and deep learning
– Using AI to read your thoughts
– AI emergent abilities may not be emergent after all
– Risk of AI manipulation...
Read more →
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March 31, 2023
UV, Emergence, Fuzz and the get_ Prefix
Current topics of interest from the Revit API discussion forum and elsewhere – Switch metric + imperial units – What is UV? – What is fuzz? – What is get_Parameter and get_Geometry? – Default localised workset names – Bing Chat Python and Dynamo tutor – Claude on Slack summarises and answers questions – Emergence and sparks of artificial general intelligence... Read more →
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March 23, 2023
.NET Assembly and DirectShape Libraries
Two illuminating discussions on direct shapes, working with direct shape libraries, and handling Revit and third-party .NET assembly DLLs – DirectShapeType and AddExternallyTaggedGeometry – Referencing and avoiding conflict with Revit DLLs – SSSVG interactive SVG reference – Coding with eyes only... Read more →
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February 23, 2023
Geometry Options and Clean Simple Curves
Geometry options and clean simple curves – Curve loop simplify and clean up – Geometry options clarification – JtClicker 2023 – OpenMEP by Chuong Ho – Unintelligible film dialogue... Read more →
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February 14, 2023
Pyramid Builder, CommandLoader, et al
Pyramid Builder, CommandLoader, and more – Dynamic load, compile and run code – DirectShape pyramids – Modify level element X and Y extents – How to filter for subsets of elements – Switch document display units – Material tags displaying '?' – Sublime Text... Read more →
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January 03, 2023
CultureInfoChanger and IronPython3
Happy New Year 2023!
Topics to begin
– Copy as HTML 2022
– Size MEP connector with CultureInfoChanger
– Journal files AU class
– Bulk reload families with IFamilyLoadOptions
– IronPython3, APS and RPS...
Read more →
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December 07, 2022
APS, Nairobi and NetTopologySuite
I am writing this in Nairobi, Kenya, getting to know the team here; also, the new APS landing page just went live, and Benoit points out a useful geometric modelling library to help power your Revit add-in – DAS team in Nairobi, Kenya – NetTopologySuite in Revit add-ins – New APS landing page – You can create RVT using APS... Read more →
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November 24, 2022
Extensible Storage Schema Deletion
A new team member, new Revit API and WPF tutorials, and new insights on handling extensible storage – Welcome, George! – WPF form UIApplication access – Mazri's Revit, Dynamo, web and WPF playlists – Extensible storage schema deletion – Extensible storage schema conflict... Read more →
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October 27, 2022
WebView2, LandXML, RefPlane and Revision
Using WebView2 in an add-in and other interesting little titbits from the Revit API discussion forum
– WebView2 and CefSharp in Revit add-ins
– Retrieve reference plane in element
– Remove revisions on sheets
– LandXML P tag...
Read more →
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October 21, 2022
Can You Avoid Chaining Idling?
AU 2022 classes are available online now, as well as a new Dynamo book and resources project.
I also present some ongoing nitty-gritty discussions on external events and Idling
– Modern add-in deployment and testing
– Parametric curvature in families
– Awesome Dynamo online book project
– Launching command after closing form
– Chaining Idling events and other solutions...
Read more →
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October 06, 2022
BIM360 Links and Programming Add-Ins
An important solution to fix a problem loading BIM 360 links and lots of advice on programming Revit add-ins in general – New Revit material appearance asset – BIM 360 links not found solution – AppStore guidelines for Revit add-in – Coding Revit add-ins the e-verse way – VS wizard template location... Read more →
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August 26, 2022
Home Planet and to Dy or Not to Dy
Let's look at two serious choices that we are facing – one more serious than the other – To Dynamo or not to Dynamo – Home planet at great risk... Read more →
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May 11, 2022
Analysis of Macros, Journals and Add-In Manager
Looking at Revit macro usage, add-in manager debug/trace functionality and journal analysis in Python and Dynamo – Revit macro study shareback – Add-in manager with debug trace – Journal file analysis – Plugging the HSL colour format... Read more →
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January 26, 2022
Add-In Manager, FormulaManager and Tiger Year
Exciting news around debugging and loading add-ins and adding formulas and scripting support to your own apps – Open source Add-In Manager – FormulaManager and scripting support – Happy New Year of the Tiger 虎... Read more →
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January 04, 2022
Happy New Year with RevitExtensions
Off we go into a new adventurous year of BIM programming – Happy New Year – RevitExtensions... Read more →
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November 19, 2021
Installer Asset, FormIt and Quaternions
Notes on FormIt and its JavaScript API, the new automatically generated RevitLookup MSI installer asset, transformations and quaternions – FormIt API and geographical context – RevitLookup MSI installer asset – Transform and quaternions... Read more →
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November 11, 2021
New Analytical Model API
Important news coming for structural developers, further development in RevitLookup, notes on extensible storage and JavaScript
– New Analytical Model API
– Praise for modeless RevitLookup
– Benchmarking generic Any versus Count
– Escape RevitLookup
– Use extensible storage carefully
– jQuery is widespread but outdated...
Read more →
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November 10, 2021
WallCrossSection Renaming in the Revit 2022.1 API
Breaking news from the Revit development team on the WallCrossSection to WallCrossSectionDefinition renaming in the Revit 2022.1 API update...
Read more →
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November 02, 2021
Revit 2022.1 SDK, RevitLookup Build and Install
Exciting news with a lot of changes to RevitLookup and The Building Coder samples
– Revit 2022.1 SDK released
– WallCrossSection vs. WallCrossSectionDefinition
– RevitLookup build and install
– Bye-bye lookup builds
– The Building Coder samples revamped
– Copy as HTML update
– Image cleanup and a robot arm...
Read more →
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October 14, 2021
Sci-Fi, Languages and Pipe Insulation Retrieval
Three quick notes on critical and inspiring sci-fi, programming languages and MEP filtering – Pipe insulation retrieval performance – Programming languages to learn – Agency by William Gibson... Read more →
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October 01, 2021
Localised Forge Intros and Apply Code Changes
Today, I highlight our new local language Forge classes and the renewed ability to easily edit and continue while debugging a Revit add-in – Non-mobile after computer crash – Local language Forge classes – Apply code changes debugging Revit add-in... Read more →
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September 24, 2021
Snooping Parts, C# Templates and Python Topics
A neat RevitLookup enhancement, powerful new Revit add-in template, and a couple of Python related topics
– RevitLookup handles PartUtils
– Nice3point Revit add-in C# template
– IronPython hosting in C# add-in
– Python 3, CPython, pyRevit and Dynamo...
Read more →
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August 31, 2021
Nina and a VS Revit Add-In Extension
Two useful community contributions and some thoughts on global warming – Nina for Revit – The BIMdev VS extension – The Economist on climate change – We are the weather... Read more →
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July 14, 2021
Collaboration, Dockables, Railings, Pop-Ups, ILSpy
An invitation to the upcoming AEC collaboration webinar and overviews over dockable panels, dialogue handling, decompilation and railing geometry
– AEC collaboration webinar
– Dockable panels and WebView2
– Dismissing Revit pop-ups
– Check API changes using decompilation
– Railing geometry...
Read more →
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