如何在不加载图像的情况下可靠地获取.NET中的图像尺寸？

using System.Drawing;

string imagePath = "path/to/image.jpg";
Image image = Image.FromFile(imagePath);
int width = image.Width;
int height = image.Height;

using System.IO;
using System.Drawing;

string imagePath = "path/to/image.jpg";
byte[] imageData = File.ReadAllBytes(imagePath);
using MemoryStream ms = new MemoryStream(imageData);
Image image = Image.FromStream(ms);
int width = image.Width;
int height = image.Height;

using System.IO;
using System.Drawing;

string imagePath = "path/to/image.jpg";
byte[] imageData = File.ReadAllBytes(imagePath);
using MemoryStream ms = new MemoryStream(imageData);
Bitmap bitmap = new Bitmap(ms);
int width = bitmap.Width;
int height = bitmap.Height;