net8.0-windows 
namespace Microsoft.AspNetCore.Http
{
    public static class HeaderParsingHttpRequestExtensions
    {
        public static bool TryGetHeaderValue<T>(this HttpRequest! request, HeaderKey<T>! header, [NotNullWhen(true)] out T value)
            where T, notnull;
    }
}
.NET
8.09.010.011.0
Information specific to net8.0
Assembly

Microsoft.AspNetCore.HeaderParsing , Version=10.11.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs a package reference to Microsoft.AspNetCore.HeaderParsing.

Package Microsoft.AspNetCore.HeaderParsing (10.11.0) net8.0
Platform Restrictions

This API is supported on all platforms.

  • Built-in API
  • Package-provided API