Upload/Save media file using HttpPostedFileBase class in C# MVC

helper.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;

namespace YourProjectNameSpace.Helpers
{
    public static class Utilities
    {
        public static string SaveFile(HttpPostedFileBase file, string virtualPath, string physicalPath, string filePath)
        {
            try
            {
                //Check directory exis or not
                if (!Directory.Exists(physicalPath))
                {
                    Directory.CreateDirectory(physicalPath);
                }

                //Check file is exist or not  
                if (!string.IsNullOrWhiteSpace(filePath) && File.Exists(filePath))
                {
                    //Delete Existing file
                    File.Delete(filePath);
                }

                //Save new image and update user data
                var filename = string.Concat(Guid.NewGuid(), Path.GetExtension(file.FileName));
                var savePath = Path.Combine(physicalPath, filename);
                file.SaveAs(savePath);

                return filename;
            }
            catch (Exception e)
            {
                return string.Empty;
            }
        }
    }
}

Sample.cs

using ProjectNameSpace.Helpers;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using System.Web.Mvc;

namespace ProjectNameSpace.Controllers
{
    public class SampleController : Controller
    {
    
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult UploadFile(HttpPostedFileBase fileObject)
        {
             var virtualPath = StaticValues.AdvertisementImagePath;
             var physicalPath = Server.MapPath(virtualPath);
             Utilities.SaveFile(fileObject, virtualPath, physicalPath, "FILE PATH");
        }        
    }    
}