ASP.NET how to upload file to a server using class HttpPostedFileBase

Here I want to tell you about uploading a file to a server and storing it in a database.

First we must create a local database file in the project.

We also make a button to select the file on the disk.
Then we need to define the function Create() that writes the file to the database.
For this we will use a class HttpPostedFileBase.
Also add the ability to upload a file from the server using the function DownLoadFile().
Another function DeleteFile() will be responsible for deleting the file on the server.

All program code:

public class File
{
 public int Id { get; set; }
 public string FileName { get; set; }
 public string ContentType { get; set; }          
 public byte[] Content { get; set; }
}

public class HomeController : Controller
{
 DbUplFileContext db = new DbUplFileContext();

 public ActionResult Index()
 {
  return View(db.Files);
 }
  
 [HttpPost]
 public ActionResult Create(File model, HttpPostedFileBase someFile)
 {
  var f_file = new File();
  f_file.FileName = System.IO.Path.GetFileName(someFile.FileName);
  f_file.ContentType = someFile.ContentType;

  using (var reader = new System.IO.BinaryReader(someFile.InputStream))
  {
   f_file.Content = reader.ReadBytes(someFile.ContentLength);
  }

  db.Files.Add(f_file);
  db.SaveChanges();

  return RedirectToAction("Index", "Home");
 }

 public ActionResult DownLoadFile(int id)
 {
  File fileToRetrieve = db.Files.Find(id);
  return File(fileToRetrieve.Content, fileToRetrieve.ContentType, fileToRetrieve.FileName);
 }

 public ActionResult DeleteFile(int id)
 {
  File fileToDelete = db.Files.Find(id);
  if (fileToDelete != null)
  {
   db.Files.Remove(fileToDelete);
   db.SaveChanges();
  }
  return RedirectToAction("Index", "Home");
 }
}

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@model IEnumerable<File_upload.Models.File> @{ ViewBag.Title = "Home Page"; } <br /> <br /> <style> table { border-spacing: 6px; border-collapse: separate; } td, th { border: solid 1px #ccc; } </style> <table> <tr> <td><p><h3>File name</h3></p></td> </tr> @foreach (File_upload.Models.File b in Model) { <tr> <td> <p>@b.FileName</p></td> <td> <p> <a href='@Url.Action("DownLoadFile", "Home", new { id = b.Id }, null)'>Download</a></p> </td> <td> <p> <a href='@Url.Action("DeleteFile", "Home", new { id = b.Id }, null)'>Delete</a></p> </td> </tr> } </table> <br /> <br /> <br /> <p><h3>Add File</h3></p> @using (Html.BeginForm("Create", "Home", FormMethod.Post, new { enctype = "multipart/form-data" })) { <input type="file" name="someFile" /> <br /> <input type="submit" value="Upload" name="UploadButton" id="UploadButton" /> }