@{
    ViewBag.Title = "Index";
}

<form action="" method="post" enctype="multipart/form-data">

  <label for="file1">Filename:</label>
  <input type="file" name="files" id="file1" />

  <label for="file2">Filename:</label>
  <input type="file" name="files" id="file2" />

  <input type="submit"  />
</form>
 

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

namespace XCX_DataApi.Areas.Module00001.Controllers
{
    public class FileUpLoadController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Index(IEnumerable<HttpPostedFileBase> files)
        {
            foreach (var k in files)
            {
                if (k != null)
                {
                    if (k.ContentLength > 0)
                    {
                        var fileName = Path.GetFileName(k.FileName);
                        string folderPath = Server.MapPath("~") + "\\" + "UploadFiles";
                        if (!Directory.Exists(folderPath))
                        {
                            Directory.CreateDirectory(folderPath);
                        }

                        var path = Path.Combine(folderPath, fileName);
                        k.SaveAs(path);
                    }
                }
            }
            return RedirectToAction("Index");
        }
    }
}