C#在没有下载整个文件的情况下获取Web上图像的宽度/高度？

using System.IO;
using System.Net;
using System.Drawing;

public static void GetImageSize(string imageUrl)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(imageUrl);
    request.Method = "GET";
    request.AllowAutoRedirect = true;
    request.Timeout = 10000;
    request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3";

    using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
    {
        using (Stream stream = response.GetResponseStream())
        {
            using (Image image = Image.FromStream(stream, false, false))
            {
                int width = image.Width;
                int height = image.Height;
                Console.WriteLine($"Image width: {width}, height: {height}");
            }
        }
    }
}