Question

Have a WCF service, which has a DataMember with custom nodes (names and numbers of items may be different)
Example:

<AppData>
 <sometag>something</sometag>
 <othertag>something else</othertag>
</AppData>

Member definition as:

  <DataMember(IsRequired:=False)>
  Public AppData As  XmlElement

it’s working only for one item.

Definition like:

  <DataMember(IsRequired:=False)>
  Public AppData As List(Of XmlElement)

wrapped inner tags in class name tag:

<AppData>
 <XmlElement><sometag>something</sometag></XmlElement>
 <XmlElement><othertag>something else</othertag></XmlElement>
</AppData>

Answer 1

Keep AppData as an XElement – then when you are ready to send the data just create a new XElement passing the list to it – it will create a parent with many child elements one for each XElement in the list. The constructor for XElement is IEnumerable<XElement> aware