Polymorphic model binding requires FormData

[stevenbey]

Under the section 'Polymorphic model binding' it would be extremely helpful if it stated that the Request Content-Type header must be multipart/form-data or application/x-www-form-urlencoded. I wasted a considerable amount of time trying to figure out why it wasn't working for application/json.

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Document Details

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• ID: cfb00531-4ac6-8bf6-9bd8-1eed6446397f
• Version Independent ID: ed418d09-6c33-699a-0d48-9aabc99457be
• Content: Custom Model Binding in ASP.NET Core
• Content Source: aspnetcore/mvc/advanced/custom-model-binding.md
• Product: aspnet-core
• Technology: aspnetcore-mvc
• GitHub Login: @ardalis
• Microsoft Alias: riande

[Rick-Anderson]

@halter73 should I add this?