net9.0 
namespace Microsoft.Net.Http.Headers
{
    public static class HeaderNames
    {
        public static readonly string! Expires;
    }
}
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.NET
5.06.07.08.09.010.011.0
.NET Core
2.02.12.23.03.1
Information specific to net9.0
Assembly

Microsoft.Net.Http.Headers , 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.

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

Platform Restrictions

This API is supported on all platforms.

  • Built-in API
  • Package-provided API