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Source: AL0020ToAL0024FormBindingAnalyzer.cs

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Description

Mixing IFormCollection with a [FromForm] DTO is not supported. Choose one approach: use IFormCollection for dynamic form access or a typed DTO for structured binding.

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Bad Code

([FromForm] UserDto user, [FromForm] IFormCollection form)

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Good Code

([FromForm] UserDto user) // choose one approach

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Properties

  • Category: ASP.NET Core
  • Severity: Error
  • Enabled by default: True
  • Code fix available: False

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Configuration

dotnet_diagnostic.AL0022.severity = warning