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refactor: make CLI transforms shim-first preserve Web Forms API calls#536

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csharpfritz merged 1 commit intoFritzAndFriends:devfrom
csharpfritz:feature/shim-first-transforms
Apr 14, 2026
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refactor: make CLI transforms shim-first preserve Web Forms API calls#536
csharpfritz merged 1 commit intoFritzAndFriends:devfrom
csharpfritz:feature/shim-first-transforms

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Shim-First CLI Transforms

WebFormsPageBase provides Request, Response, Server, Session, Cache, ClientScript, IsPostBack, and ViewState as properties. Pages inheriting from it compile AS-IS. But 5 CLI transforms were doing unnecessary work:

  • ResponseRedirectTransform stopped rewriting Response.Redirect() to NavigationManager. ResponseShim handles it.
  • SessionDetectTransform removed redundant [Inject] SessionShim/CacheShim (already on WebFormsPageBase)
  • ClientScriptTransform fixed guidance (was suggesting @Inject in .cs files)
  • RequestFormTransform updated guidance to note automatic shim support
  • ServerShimTransform updated guidance to note automatic shim support

All 353 CLI tests pass.

Closes #534

WebFormsPageBase provides Request, Response, Server, Session, Cache,
ClientScript, IsPostBack, and ViewState as properties. Code inheriting
from it compiles AS-IS with no transforms needed for these APIs.

Changes:
- ResponseRedirectTransform: stop rewriting Response.Redirect() to
  NavigationManager.NavigateTo(). Leave calls intact  ResponseShim
  handles ~/ and .aspx automatically. Only strip Page./this. prefix.
- SessionDetectTransform: remove redundant [Inject] SessionShim and
  CacheShim injection  already on WebFormsPageBase.
- ClientScriptTransform: fix guidance to say 'works via WebFormsPageBase'
  instead of suggesting @Inject (wrong syntax in .cs file).
- RequestFormTransform: lead guidance with 'works automatically via
  RequestShim on WebFormsPageBase'.
- ServerShimTransform: lead guidance with 'works automatically via
  ServerShim on WebFormsPageBase'.

All 353 CLI tests pass.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
@csharpfritz csharpfritz merged commit c1529a6 into FritzAndFriends:dev Apr 14, 2026
4 checks passed
@csharpfritz csharpfritz deleted the feature/shim-first-transforms branch April 14, 2026 21:08
csharpfritz added a commit to csharpfritz/BlazorWebFormsComponents that referenced this pull request Apr 14, 2026
…tzAndFriends#536)

Update 20 unit tests across 4 test files to match the new shim-first
approach where WebFormsPageBase provides Session, Cache, ClientScript,
Server, and Request shims without requiring [Inject] properties:

- SessionDetectTransformTests: Remove [Inject] assertions, verify
  guidance blocks reference WebFormsPageBase instead
- ClientScriptTransformTests: Replace ClientScriptShim assertions
  with WebFormsPageBase assertions
- RequestFormTransformTests: Replace FormShim with RequestShim
- ServerShimTransformTests: Update guidance text assertion

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
csharpfritz added a commit to csharpfritz/BlazorWebFormsComponents that referenced this pull request Apr 14, 2026
…ritzAndFriends#536

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
csharpfritz added a commit that referenced this pull request Apr 16, 2026
…rrent.Session, ThreadAbortException (#538)

* feat: add gap detection for Server.Transfer, HttpContext.Current.Session, ThreadAbortException

- ServerShimTransform: detect Server.Transfer(), GetLastError(), ClearError() with NO-SHIM TODOs
- SessionDetectTransform: detect HttpContext.Current.Session[ and replace with Session[
- ResponseRedirectTransform: detect catch(ThreadAbortException) dead code and endResponse=true warnings
- Added 15 new unit tests (388 total, all passing)
- Updated bwfc-migration SKILL.md with gap patterns section
- Updated copilot-instructions-template.md with gotchas 11-14
- Updated bwfc-data-migration SKILL.md with ThreadAbortException warning

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: update test assertions for shim-first transform behavior (PR #536)

Update 20 unit tests across 4 test files to match the new shim-first
approach where WebFormsPageBase provides Session, Cache, ClientScript,
Server, and Request shims without requiring [Inject] properties:

- SessionDetectTransformTests: Remove [Inject] assertions, verify
  guidance blocks reference WebFormsPageBase instead
- ClientScriptTransformTests: Replace ClientScriptShim assertions
  with WebFormsPageBase assertions
- RequestFormTransformTests: Replace FormShim with RequestShim
- ServerShimTransformTests: Update guidance text assertion

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* fix: update L1 expected files to match shim-first transforms from PR #536

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Successfully merging this pull request may close these issues.

Consider consolidating page-level base classes (WebFormsPageBase, WebFormsPage, WebFormsForm)

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