net9.0 
namespace Microsoft.AspNetCore.Http
{
    public static class OpenApiRouteHandlerBuilderExtensions
    {
        public static TBuilder ProducesValidationProblem<TBuilder>(this TBuilder builder, int statusCode = 400, string? contentType = null)
            where TBuilder, IEndpointConventionBuilder!;
    }
}
.NET 9.0
Information specific to net9.0
Assembly

Microsoft.AspNetCore.Routing , Version=9.0.0.0, PublicKeyToken=adb9793829ddae60

Referencing

Requires any:

  • Your project needs to use SDK Microsoft.NET.Sdk.Web.

  • Your project needs a framework reference to Microsoft.AspNetCore.App.

Platform Restrictions

This API is supported on all platforms.

  • Built-in API
  • Package-provided API