Question

I am sending an object through a webservice with readonly methods.
I am using the Iserializable interface, assuming that I would no longer need a parameterless constructor. This is not true and I still cannot send my object over the wire.

public class Foo:  ISerializable
{
 public boolean IsBusy { get; private set;}
 protected Foo(SerializationInfo info, StreamingContext context) 
  {
this.IsBusy = info.GetBoolean("IsBusy");
 }
   void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
   {
 .AddValue("IsBusy", this.IsBusy);
  }

Answer 1

Not quite sure what a read-only method is. But ISerializable only works for binary serialization. A web service uses XML serialization, a parameter-less constructor is required.

One trick you could use is to attribute it so that client code can never use it directly:

 [Obsolete("For serialization only", true)]
 public Foo() {}