Question

Lets say I have business class:

public class Foo
{
   public int Prop1 {get;set;}
   public int Prop2 {get;set;}

   public Foo(int prop1, int prop2)
   {
      this.Prop1 = prop1;
      this.Prop2 = prop2;
   }

   public Foo()
   {
     throw new NotImplementedException();
   }
}

The business class is only valid if both properties are set. Therefore I could ensure implementing the parameterless constructor and throw a NotImplementedException if someone tries to instanciate the class with the parameterless constructor.

But now I want to be able to serialize/deserialize my class. For the deserilization process I need the default constructor, which musn’t throw the NotImplementedExeption anymore.

Is there a way to find out whether a create an instance of my class with the default constructor or whether the object is being deserialized?

Let’s assume I have no valid default values for both properties.

How could I solve this situation?

Answer 1

Hide the default constructor using protected modifier.

Read More