c# - Update an entity using entity framework while ignoring some properties

Question

I am working with asp.net mvc 4. I have to update my persistence store using an edit method, but I want to ignore some columns.

I had found some answers here, but they weren't working for me (I suppose).

Here is my method:

[HttpPost]
public ActionResult Edit(Candidat candidat)
{
    ProcRecDB _db = new ProcRecDB();  //  from DbContext

    if (ModelState.IsValid)
    {

        _db.Entry(candidat).State = EntityState.Modified;
        _db.SaveChanges();
        return RedirectToAction("Index");
    }
    return View(candidat);
}

The Candidate model has 10 properties; how would I ignore some of them?

Answer 1

If your using EF 5, you can mark a property as not modified after its been marked as modified

_db.Entry(candidat).State = EntityState.Modified;
// Ignore changes to the value of SomeProperty
_db.Entry(candidat).Property("SomeProperty").IsModified = false;
_db.SaveChanges();