read only [DataMember]

Hello,

Is there a way to create a read only datamember?

example

[DataContract]
public class User
{
[DataMember]
public int Id; //<-- this should be readonly

public User(int id)
{
this.Id = id;
}
}

The client should know about it, but should not be able to change it.

thanks
Dirk

Do it private with only public getter ( without setter )
Arkady

"Dirk Reske" <_freak.2k@gmx.net> wrote in message
news:uFPbCiXQHHA.3812@TK2MSFTNGP06.phx.gbl...
> Hello,
>
> Is there a way to create a read only datamember?
>
> example
>
> [DataContract]
> public class User
> {
> [DataMember]
> public int Id; //<-- this should be readonly
>
> public User(int id)
> {
> this.Id = id;
> }
> }
>
> The client should know about it, but should not be able to change it.
>
> thanks
> Dirk

Generally the property is marked as [DataMember], however for this
scenario you can mark the underlying field as [DataMember] (and
perhaps rename in the attribute to keep you serialization the same).
This allows the class to continue to expose the property as read-only,
yet allow correct (de)serialization.

Marc

Not to directly answer your question, but use of a public field (which has
unrestricted access since it is just a publically-exposed chunk of memory)
instead of a property is a discouraged practice (I believe FxCop will flag
it). The ".Net way" to do what you're asking is:
private int _Id;
public int Id {
get {
return this._Id;
}
}