How to update one field of specific records using Entity Framework?

Question

I want update family of a person who his name is pejman. This is my object Class:

public class Person
{
    public int Id { get; set; }
    public string FirstNa         


        

Answer 1

The following worked for me:

public ActionResult ChangePassword(Account account)
{
    try
    {
            if (ModelState.IsValid)
            {
                db.Accounts.Attach(account);
                db.Entry(account).Property(x => x.Password).IsModified=true;
                db.Configuration.ValidateOnSaveEnabled = false;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
    }
    catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
    {
        Exception raise = dbEx;
        foreach (var validationErrors in dbEx.EntityValidationErrors)
        {
            foreach (var validationError in validationErrors.ValidationErrors)
            {
                string message = string.Format("{0}:{1}",
                    validationErrors.Entry.Entity.ToString(),
                    validationError.ErrorMessage);
                raise = new InvalidOperationException(message, raise);
            }
        }
        ModelState.AddModelError("", raise);

    } 
    return View(account);
}