docs: remove obsolete [HandlerRoute] attribute from ASHX migration guide#481
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csharpfritz merged 1 commit intoFritzAndFriends:devfrom Mar 19, 2026
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The [HandlerRoute] attribute and MapBlazorWebFormsHandlers() were eliminated
during the design pivot to Minimal API registration. The actual API uses
MapHandler<T>("/path") in Program.cs, but the documentation still referenced
the old attribute-based pattern throughout.
Changes:
- Remove all [HandlerRoute(...)] decorations from code examples
- Replace MapBlazorWebFormsHandlers() with explicit MapHandler<T>() calls
- Update Quick Start checklist step 5 to reference Program.cs registration
- Add Program.cs registration snippets to all handler examples
- Update troubleshooting table and summary section
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
The
[HandlerRoute]attribute andMapBlazorWebFormsHandlers()were eliminated during the design pivot to Minimal API registration. The actual handler infrastructure usesMapHandler<T>("/path")inProgram.cs, but the ASHX migration documentation was never updated to reflect this.Changes
[HandlerRoute(...)]attribute decorations from handler class examplesMapBlazorWebFormsHandlers()calls with explicitMapHandler<T>("/path")inProgram.csProgram.csregistrationProgram.csregistration snippets to all handler examplesVerification
HandlerRouteorMapBlazorWebFormsHandlersin the doc