如何将HttpContext.Current.Request.ReadEntityBodyMode设置为None？

Question

我正在尝试在ASP.NET WebAPI操作中使用流模式：

我通过{p>设置了https://ibb.co/jzsjNz

Startup.cs

处理缓冲区/流模式的类

    public static void Configuration(IAppBuilder app)
    {
        if (HostingEnvironment.IsHosted)
        {
            GlobalConfiguration.Configure(config => Configuration(app, config));
            GlobalConfiguration.Configuration.Services.Replace(typeof(IHostBufferPolicySelector), new CustomWebHostBufferPolicySelector());
        }
        else
        {
            var config = new HttpConfiguration();
            Configuration(app, config);
        }
    }

但是在我的WebAPI控制器操作中，该值设置为Classic而不是None ...

// Try the worst case, everything has to be streamed...
public class CustomWebHostBufferPolicySelector : WebHostBufferPolicySelector
{
    // Check incoming requests and modify their buffer policy
    public override bool UseBufferedInputStream(object hostContext)
    {
        return false;
    }

    // You could also change the response behaviour too...but for this example, we are not
    // going to do anything here...
    // I override this method just to demonstrate the availability of this method.
    public override bool UseBufferedOutputStream(System.Net.Http.HttpResponseMessage response)
    {
        return base.UseBufferedOutputStream(response);
    }
}