Generic declaration errors #51394
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Generic declaration errors #51394
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Pull request overview
This pull request consolidates C# compiler errors and warnings related to generic type parameters into a single comprehensive documentation file (generic-type-parameters-errors.md). The changes address issue #49601, which requested documentation for CS9011 and CS9012 errors introduced in C# 11, along with consolidation of other generic-related errors.
Changes:
- Creates a comprehensive guide covering 32 error codes related to generic type parameters, constraints, and type arguments
- Removes 11 individual error documentation files (9 from
/misc/, 2 from/compiler-messages/) - Adds redirects for all deleted files to the new consolidated documentation
- Updates the TOC to reflect the consolidation
- Removes documented error codes from the "sorry-we-don't-have-specifics" stub file
Reviewed changes
Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| docs/csharp/language-reference/compiler-messages/generic-type-parameters-errors.md | Main consolidated documentation covering 32 error codes organized into 7 thematic sections with examples |
| docs/csharp/misc/cs0401.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0405.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0449.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0450.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0451.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0454.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0455.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0706.md | Deleted - moved to consolidated file |
| docs/csharp/misc/cs0717.md | Deleted - moved to consolidated file |
| docs/csharp/language-reference/compiler-messages/cs0702.md | Deleted - moved to consolidated file |
| docs/csharp/language-reference/compiler-messages/cs0703.md | Deleted - moved to consolidated file |
| .openpublishing.redirection.csharp.json | Added 11 redirects for deleted files to consolidated documentation |
| docs/csharp/language-reference/toc.yml | Updated to remove individual error entries and consolidate into single entry with displayName listing all error codes |
| docs/csharp/misc/sorry-we-don-t-have-specifics-on-this-csharp-error.md | Removed 4 error codes (CS1961, CS7002, CS8322, CS9011, CS9012) now documented |
gewarren
approved these changes
Jan 30, 2026
docs/csharp/language-reference/compiler-messages/generic-type-parameters-errors.md
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Co-authored-by: Genevieve Warren <24882762+gewarren@users.noreply.github.com>
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Fixes #49601
There was an existing file for this topic. In addition, Copilot found several other good candidates for addition to this file, resulting in new consolidation opportunities.
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