net9.0 
namespace Microsoft.AspNetCore.Cors.Infrastructure
{
    public class CorsMiddleware
    {
        public CorsMiddleware(RequestDelegate! next, ICorsService! corsService, ILoggerFactory! loggerFactory, string? policyName);
    }
}
nuget.org
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Reference this API
.NET
5.06.07.08.09.0
.NET Core
3.03.1
Information specific to net9.0
Assembly

Microsoft.AspNetCore.Cors , 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