How to resize image before upload to varbinary column?

Hi

I'm uploading an image to a varbinary column in the database successfully. But I want to resize it before uploading.

So this is what I tried:

Guests model:

public byte[] Image { get; set; }

public string ContentType { get; set; } 

ImageExtentions Class to resize the image:

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace System.Drawing
{
    public static class ImageExtentions
    {
        public static Image Resize(this Image current, int maxWidth, int maxHeight)
        {
            int width, height;

            if (current.Width > current.Height)
            {
                width = maxWidth;
                height = Convert.ToInt32(current.Height * maxHeight / (double)current.Width);
            }
            else
            {
                width = Convert.ToInt32(current.Width * maxWidth / (double)current.Height);
                height = maxHeight;
            }

            var canvas = new Bitmap(width, height);

            using (var graphics = Graphics.FromImage(canvas))
            {
                graphics.CompositingQuality = CompositingQuality.HighSpeed;
                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
                graphics.CompositingMode = CompositingMode.SourceCopy;
                graphics.DrawImage(current, 0, 0, width, height);
            }

            return canvas;
        }

        public static byte[] ToByteArray(this Image current)
        {
            using (var stream = new MemoryStream())
            {
                current.Save(stream, current.RawFormat);
                return stream.ToArray();
            }
        }
    }
}

GuestsController:

//using a lot
using System.Drawing;
namespace Proj.Controllers
{
    public class GuestsController : Controller
    {
        private readonly ApplicationDbContext _context;

        public GuestsController(ApplicationDbContext context)
        {
            _context = context;
        }
        //Some code
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("Id,Name,DoB")] Guests guest, List<IFormFile> Image)
        {
                IFormFile uploadedImage = Image.FirstOrDefault();
                if (ModelState.IsValid)
                {
                    foreach (var item in Image)
                    {
                        if (item.Length > 0)
                        {
                            using (var stream = new MemoryStream())
                            {
                                using (Image img = Image.FromStream(uploadedImage.OpenReadStream()))
                                {
                                    Stream ms = new MemoryStream(img.Resize(900, 1000).ToByteArray());
                                    FileStreamResult fsr = new FileStreamResult(ms, "image/jpg");
                                    uploadedImage.OpenReadStream().CopyTo(stream);
                                    guest.Image = stream.ToArray();
                                    guest.ContentType = uploadedImage.ContentType;
                                }

                            }

                        }
                    }
                }
                    _context.Add(guest);
                    await _context.SaveChangesAsync();
       }

But this scenario gives me this error:

List<IFormFile> does not contain a definition for 'FromStream' and no accessible extension method  'FromStream' accepting a first argument of type List<IFormFile> could be found.

How to perform this task please?