Revit Export

A Revit add-in that exports schedules straight to the **** LCA platform. Adds a single ribbon button to Revit; all other features hidden.

Built on top of acnicholas/scaddins (LGPL-3.0). See NOTICE.

1. Download -LCA-Export-win64-<version>.msi from the latest release.
2. Double-click it. No admin rights needed — installs per-user under %LocalAppData%\-LCA-Export\, no UAC prompt.
3. Read and accept the License Agreement (LGPL-3.0-or-later).
4. On the Custom Setup page, tick the Revit versions you want to install for (any combination of 2023 / 2024 / 2025 / 2026 / 2027). Defaults to all bundled versions.
5. Start Revit. Look for the **** ribbon panel with the ** Export** button.

One MSI covers every Revit version. Same .msi, no separate per-Revit downloads, same file works for upgrades.

You don't need to do anything. The add-in checks GitHub on every Revit start. If a newer version is found, you get a one-click Update now dialog. Click it → close Revit → msiexec runs silently in the background → re-open Revit on the new version. The silent updater preserves the Revit-version selection you made on first install (MSI MajorUpgrade migrates feature state across versions), so it never re-installs Revit years you previously turned off.

Open the do\ folder. There are exactly four files there, numbered. That's the entire interface — just double-click in Explorer.

See do\README.md for examples and the first-time install commands.

The repo root also has build.bat, build.ps1, build_installer.bat, build_tests.bat, run_tests.bat — those are upstream's old Cake-based pipeline. Ignore them. They're left untouched so upstream syncs stay clean. Always use the four files in do\ instead.

winget install --id Microsoft.DotNet.SDK.8 --silent --accept-package-agreements --accept-source-agreements
winget install --id Microsoft.DotNet.SDK.10 --silent --accept-package-agreements --accept-source-agreements
winget install --id Microsoft.DotNet.Framework.DeveloperPack_4 --silent --accept-package-agreements --accept-source-agreements
dotnet tool install --global wix

After installing, close any open terminal/Explorer window and re-open one so PATH picks them up. Then double-click do\1-build.cmd.

There is exactly one place to change the version: src\SCaddins.csproj.

But you don't edit it by hand. Run:

do\3-release.cmd -Version 26.3.2

That rewrites the version in the csproj, builds, packages, and (optionally) tags + pushes. Everything downstream picks up the change automatically:

The single source of truth is <AssemblyVersion> in src/SCaddins.csproj. All UI surfaces read from the assembly at runtime via Branding.VersionShort. You should never have to touch the version in more than one place.

This fork is structured so git merge upstream/master only ever touches a tiny set of files. The export code, the rebrand, and the updater are all isolated under src// and never collide. See docs/SYNCING.md for the full architecture.

The short version:

# One-time setup per fresh clone
git remote add upstream https://github.com/acnicholas/scaddins.git
git config merge.ours.driver true

Then either let it happen automatically (the weekly sync workflow opens a PR every Monday) or double-click do\4-sync.cmd locally when you want to.

do/                            <- the four files you double-click
  1-build.cmd
  2-installer.cmd
  3-release.cmd
  4-sync.cmd
  README.md                       what each does + first-time install

src
  /                 -only code (export, login, API, updater, branding)
    Branding.cs                 single source of truth for product strings + version
    .cs         ribbon hook called from SCaddins.cs
    Update/.cs one-click updater
    Api/                         API client + DTOs
    Login/                      login window
    Models/                     shared export-domain types
    ExportSchedules/            the rewritten ExportSchedules implementation
  Assets/
    -logo.svg         source logo
    Ribbon/-rvt*.png  ribbon icons
  SCaddins.cs                 upstream entry point + 2 #if  islands
  SCaddins.csproj             upstream csproj + 1  edit block + version
  SCaddins.addin              rebranded; merge=ours
  Constants.cs                rebranded URLs; merge=ours
  LatestRelease.cs            untouched (GitHub Releases JSON model)

setup/
  /                  WiX v5 MSI installer
    -installer.wxs
    -license.rtf      EULA shown by the installer (LGPL-3.0)
    .ico

scripts/                      PowerShell scripts that the do/*.cmd files wrap
  build.ps1
  build-installer.ps1
  release.ps1
  sync.ps1

.github/workflows/
  build.yml                   CI: build all 3 Revit configs on push/PR
  release.yml                 build + package + publish on tag push
  sync-upstream.yml           weekly upstream sync PR

docs/
  SYNCING.md                  upstream sync runbook
  RELEASING.md                release procedure

LGPL-3.0-or-later. Based on SCaddins by Andrew Nicholas. See NOTICE, COPYING, and COPYING.LESSER.