c# - How can i hide "setters" from all but one assembly? -

i have alluded issue in my other question, think it's worthwhile breaking out own question, it's not dependant on other scenarios mentioned.

anyways - onto q, don't know if possible. looking solution/workaround.

i have class library, nothing poco's:

mycompany.myproject.domain.poco 

this assembly has poco this:

public class post {    public int postid { get; set; }    public int name { get; set; }       ... } 

now, have class library, dal/repository, , uses entity framework 4.0 persistence:

mycompany.myproject.repositories 

this assembly has reference poco project, needs perform crud operations on poco's (grab db objects, project poco's, return, modify poco's).

now, have web application, has reference both poco , repository assembly.

if this:

somepoco.postid = 10; 

i sqlexception, postid identity field in database, , hence should not explicity set.

is there way can hide setter these special properties, repository has access setter?

i can't think of way regular accessibility modifiers (as none of them suit scenario), can guys think of workaround?

you make setter internal, , make internals visible repository assembly

[assembly: internalsvisibleto("mylibrary.repositories")] public class post {    public int postid { get; internal set; }    public int name { get; internal set; }       ... } 

this means can 'get' properties, assembly, , assembly containing repository, can 'set'