How to edit a value using Entity Framework?

Question

I have this function: (I'm new with EF)

    public sis_user Save(sis_user user, bool edit)
    {
        if (edit)
        {
            //How to edit?
            sis_user userAux =_context.sis_user.FirstOrDefault(x => x.login == user.login);

            _context.SaveChanges();
            return user;
        }

        //To add.
        _context.sis_sis_user.Add(user);
        _context.SaveChanges();
        return user;
    }

I can add values, but I'm not sure how to edit a existing one...

Matas Vaitkevicius · Accepted Answer · 2014-07-15 13:57:10Z

1

You change the property value that you want to be changed.

public sis_user Save(sis_user user, bool edit)
    {
        if (edit)
        {
            //How to edit?
            sis_user userAux =_context.sis_user.FirstOrDefault(x => x.login == user.login);
            userAux.Name = "Different Name";
            _context.SaveChanges();
            return user;
        }

        //To add.
        _context.sis_sis_user.Add(user);
        _context.SaveChanges();
        return user;
    }

answered Jul 15, 2014 at 13:57

Matas Vaitkevicius

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1 Comment

Matas Vaitkevicius Over a year ago

You could since they are of same type assuming user has id that of userAux and there are no complex types contained in these objects.

FreeAsInBeer · Accepted Answer · 2014-07-15 13:57:10Z

1

You just need to set the fields on the object you just pulled.

sis_user userAux =_context.sis_user.FirstOrDefault(x => x.login == user.login);

userAux.XXX = "Some Value";

_context.SaveChanges();

answered Jul 15, 2014 at 13:57

FreeAsInBeer

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