Question

Lets say that i have 2 instances of the same entity, a and b

a.SomeProp = 2;
b.SomeProp = 1;

I would like to update a with b:s properties:

a = b;
context.SaveChanges();

(a is attached to the context, b is not)

However, the values are not updated. I suppose im doing it the wrong way. Any help is much appreciated.

Answer 1

If you do

a = b

then you set a pointing to the same object as b (and the original object pointed to is discarded).

You need to assign the properties you want to update, like:

a.SomeProp = b.SomeProp