CSharp Painkiller
Smart file creation, namespace management, code generation, diagnostics, and more for C#.
GitHub repository
Table of Contents
Features
Create C# Types
Quickly scaffold new C# type files with auto-detected namespaces. Right-click a folder in the Explorer → C# Create.
Adjust Namespaces
Fix namespace declarations across one file or an entire folder in a single action. Right-click any .cs file or folder → C# Refactor → C# Adjust Namespaces.
Rename File By Type
Rename .cs files to match the C# type they contain. Right-click a file or folder → C# Refactor → C# Rename File By Type.
Generate Mapping Methods
Generate MapTo / MapFrom boilerplate for mapping between types. Available in the C# Refactor submenu.
Sort Usings
Alphabetically sort using directives in a .cs file or across an entire folder. Right-click → C# Refactor → C# Sort Usings.
Generate an interface from a class definition in one click. Right-click a .cs file → C# Refactor → C# Extract Interface.
ASP.NET Templates
Scaffold ASP.NET controllers and Minimal API endpoints. Right-click a folder → C# Generator → ASP.NET.
| Template |
Description |
| Empty Controller |
Bare-bones [ApiController] class |
| EF CRUD Controller |
Full CRUD controller wired to DbContext |
| Empty Minimal API |
Minimal API endpoint group stub |
| EF CRUD Minimal API |
Full CRUD Minimal API wired to DbContext |
Generate requests, handlers, notifications, and pipeline behaviors. Right-click a folder → C# Generator → MediatR/MitMediator. It is not necessary to enter the full name of the request, if it is a base request like "get, create, delete, update or other" the extension will automatically substitute the name and determine whether it is a command or a query.
| Template |
Description |
| Request and Handler |
IRequest + IRequestHandler pair |
| Request |
IRequest only |
| RequestHandler |
IRequestHandler only |
| Notification and Handler |
INotification + INotificationHandler pair |
| Notification |
INotification only |
| NotificationHandler |
INotificationHandler only |
| Empty PipelineBehavior |
Blank IPipelineBehavior |
| FluentValidation PipelineBehavior |
Validation behavior using FluentValidation |
EF Core
Scaffold Entity Framework Core entity configurations. Right-click a folder → C# Generator → EF Core, or right-click a .cs entity file directly.
Diagnostics
The extension provides real-time inline diagnostics for common C# code-quality issues. All diagnostics can be individually enabled or disabled in Settings.
| Diagnostic |
Description |
Setting |
| Wrong namespace |
Namespace doesn't match the file path |
csharppainkiller.diagnostics.wrongNamespace |
| Wrong filename |
File name doesn't match the primary type name |
csharppainkiller.diagnostics.wrongFilename |
| Unsorted usings |
using directives are not in alphabetical order |
csharppainkiller.diagnostics.unsortedUsings |
| Mixed-language identifiers |
Type/method/variable names contain non-Latin or mixed-script characters |
csharppainkiller.diagnostics.mixedLanguageIdentifiers |
Go To Handler
Navigate between a MediatR/MitMediator request file and its handler.
Issues
Release Notes
0.0.1
Initial release with:
- C# type creation (class, record, struct, enum, interface, record struct)
- Namespace adjustment for files and folders with automatic
using directive updates
- File renaming based on the contained C# type name
- Sort usings, extract interface, generate mapping methods
- ASP.NET, MediatR, MitMediator, and EF Core code generation templates
- Real-time diagnostics (wrong namespace, wrong filename, unsorted usings, mixed-language identifiers)
- Generate Request and handler for MediatR and MitMediator request files
- Go To Handler for MediatR and MitMediator
