FormulaEngineer examples

Create, read, and style Excel workbooks in .NET.

FormulaEngineer runs unattended inside build pipelines — no Excel install, no COM automation, no interactive licence step. Each repository below is a complete, working demo you can clone and run.

Offline activation A licence file on disk. No call home, no network dependency.

Ephemeral agents Fresh container per run, no persisted machine state.

No Excel, no COM Linux runners with nothing Office-related installed.

GitHub Actions

Licence activation and formula evaluation on every push, running on GitHub-hosted Ubuntu runners.

FEGitHubActionsDemo1 Workbook creation as a pipeline stage. FEGitHubActionsFormulaEvaluation Formula evaluation as a pipeline stage.

Docker

Two-stage .NET 8 image, licence mounted read-only, the container running with no network at all.

FormulaEngineer-Docker-CI-ExcelWriteDemo Workbook creation as a pipeline stage. FormulaEngineer-Docker-CI-FormulaEvaluationDemo Formula evaluation as a pipeline stage.

GitLab CI/CD

Pipeline stages on GitLab-hosted runners, same licence model, same artifacts.

FeGitLabPipeLineExcelWriteDemo Workbook creation as a pipeline stage. FeGitLabPipeLineExcelFormulaEvaluateDemo Formula evaluation as a pipeline stage.

Azure DevOps

Coming soon

Azure Pipelines demo in progress.

Running it in your own pipeline?

The same package works in any .NET build environment. If your pipeline has a constraint these demos do not cover, get in touch and we will work through it.

Get FormulaEngineer on NuGet Contact about CI/CD