minimal-api-file-upload
Implementing File Uploads in ASP.NET Core Minimal APIs
When to Use
- File upload endpoints in ASP.NET Core minimal APIs (.NET 8+)
- Handling IFormFile or IFormFileCollection parameters
- When you need size limits, content type validation, or streaming large files
When Not to Use
- MVC controllers →
[FromForm] IFormFileworks directly with attributes - Simple JSON body → no file upload needed
- Very large files (> 1GB) → use streaming with
MultipartReaderinstead
Inputs
| Input | Required | Description |
|---|---|---|
| File parameter(s) | Yes | IFormFile or IFormFileCollection |
| Size limits | Yes | Max file/request size |
| Allowed types | No | Content type or extension restrictions |
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