CODEWITHSUNDEEP
c#wcfwcf-binding
Arshad Badar Khan
Arshad Badar Khan

Reputation: 1004

Inheriting DataContract in WCF

I have a DataContract say called Credentials which I've inherited into my own business object called MyCredentials and customized. I want to send it over the wire but understandably I get an error.

There was an error while trying to serialize parameter

Is there a way to resolve this without doing a conversion between business object and DataContracts? My code work looks something like this

[DataContract]
[KnownType(typeof(Credentials))]
internal class MyCredentials : Credentials
{
    public MyCredentials ()
    {
    }
}

Upvotes: 1

Views: 304

Answers (2)

CHEMBETI ARAVIND
CHEMBETI ARAVIND

Reputation: 91

Accessibility modifiers do not affect a DataContract after all it is a contract.

Upvotes: 0

Jehof
Jehof

Reputation: 35544

You need to decorate the base class Credientials with the KnownType-Attribute.

[DataContract]
[KnownType(typeof(MyCredentials))]
publice class Credentials
{
    public Credentials()
    {
    }
}

Also i think you need to make the class public and not internal when you decorate it with the DataContractAttribute.

[DataContract]
public class MyCredentials : Credentials {
  public MyCredentials () {
  }
}

Upvotes: 3

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