Using Required and JsonRequired in ASP.NET Core Model Binding with JSON body

Question

I\'m using ASP.NET Core 2.0, and I have a request object annotated like this:

public class MyRequest
{
    [Required]
    public Guid Id { get; set; }

    [         


        

Answer 1

When you use [FromBody] as binding source, the Model properties will get default values and [BindRequired] will be ignored. There is a related issue on "Problems with Parameter Validation".

In this case is better to use [JsonRequired] instead of [BindRequired] to enforce binding properties.

Note that [JsonRequired] affects serialization and deserialization both.