GitHub Action to set the current version to a dotnet .csproj project file. Places the set version into a context variable for later reference.

In a GitHub Workflow that runs after pushing a tag:

name: Auto-version on tag

on:
  push:
    tags:
      - '*'

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Set version
        id: package_version
        uses: KageKirin/set-csproj-version@v0
        with:
          file: src/a_project.csproj
          version: ${{ github.ref_name }}

      - name: Commit new version
        run: |
          git commit -am "CI: update version from tag"
          git push https://${{ github.token }}@github.com/OWNER/REPO

This represents the path to the .csproj to retrieve the version number from.

This is the Regular Expression used to verify the version. It defaults to an equivalent of major.minor.patch and requires all 3 integers to be present.

This is the XPath locator for the Version element. It defaults to //PropertyGroup/Version.

This is the version string to write into the package. It must match the provided regex format.

This the version string as retrieved from the package.json after writing to the file.

The action will fail if:

• it can't open the file
• it fails to retrieve the <Version> element
  • note that a newly created project does not contain any <Version> tag.
• the version string does not match the provided regex