How do I get ASP.Net Web Service Serialization to work correctly with inherited and implented data entities in Web Services

Application Architecture: 3 Tiered with Data Entities

1. .svc Web Service
2. DAL
3. Web Application

  I have a web application that "calls" for data on the DAL.  The DAL queries the database and puts that data into a data entity via a custom build "data mapper."  The web application receives that data entity and processes it appropriately.  However the some of the data entity's properties are null.  Our custom data mapper, DAL and Stored procedures (oracle db) are working correctly and returning data as designed.  And the data entity is correctly designed as showed below.  The data entity inherites another class properties and implements an interface.  The data entity has no methods only data properties.  As shown below  alpha inherits childA and implements childB.  The problem is childB properties are not being set.
using System.Runtime.Serialization.
...
 
[Data Contract]
Public class alpha: childA, childB
{
...
}
 
[Data Contract]
Public class childA
{
  [Data Member]
  public string name{set;get;}
  [Data Member]
  public int age{set;get;}
}
 
 
 
[Data Contract]
public interface childB
{
  [Data Member]
  public int weight{set;get;}
  [Data Member]
  public int height{set;get;}
}

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ICDB_EDAsked:
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deadlyDevConnect With a Mentor Commented:
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deadlyDevCommented:
You need to apply the data member attributes to the properties in alpha, and not the interface
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ICDB_EDAuthor Commented:
Yes it did.  Sorry for the delay
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