[dotnet core MVC], I can't get file from byte array (field stored into database).

Question

I'm becoming crazy to get physical file from database field. I use asp.net MVC project (dotnet core 1.1). Thanks in avance and happy Christams!

In some part of my CONTROLLER :

public void Download(int id)
{
    downloadMyFile(_context.myTable.Find(id).MyBLOBField,
                _context.myTable.Find(id).MyFieldContentType, 
                _context.Richieste.Find(id).MyFieldOriginalFileName
     );
 }

public FileContentResult downloadMyFile(byte[] fileBytes, 
                                  string fileContent, string fileName)
{
            return File(fileBytes, fileContent, fileName);
}

My VIEW :

<a asp-action="Download" asp-route-id="@Model.Id"> Download File</a>

**

My notes:

If I use this, works:

public FileResult download()
        {
            var fileName = @"myRealFileNameStoredInTheServer.ext";
            var filepath = $"Downloads/{fileName}";
            byte[] fileBytes = System.IO.File.ReadAllBytes(filepath);
            return File(fileBytes, "application/x-msdownload", fileName);
        }

BUT WHEN PASS BYTE ARRAY FROM ANOTHER BYTE ARRAY DOESN'T WORK

I'm try also using Response method, but I can't find BinaryWrite() on the ASPNET CORE overloads of Response... nothing also using a MemoryStream! Can you help me please..?

Answer 1

Read the comment of Stephen Muecke for understand what has been my issue.

 public FileContentResult Download(int id)
 {
    return File(_context.myTable.Find(id).MyBLOBField,
                _context.myTable.Find(id).MyFieldContentType, 
                _context.Richieste.Find(id).MyFieldOriginalFileName
     );
 }