معادل کد زیر در mvc.core چیست

items.InputStream.Read(Attach.Attached, 0, items.ContentLength);


foreach (var items in file)
{
var Attach = new Add
{
DocumentationAttachId = Guid.NewGuid(),
DocumentationId = newGuId,
FileName = items.FileName,
ContentType = items.ContentType,
FileLength = items.ContentLength,
Attached = new byte[items.ContentLength],
};
items.InputStream.Read(Attach.Attached, 0, items.ContentLength);
db.AttachRepository.Add(AttachMapper.Attach(Attach ));
db.Complete();
}