I have a type that implements IXmlSerializable
which I am serializing with DataContractSerializer
. How can I control the root element namespace and name when serializing it as the root element of an XML document?
Say I have the following type:
public partial class PersonDTO : IXmlSerializable
{
public string Name { get; set; }
#region IXmlSerializable Members
public System.Xml.Schema.XmlSchema GetSchema()
{
return null;
}
public void ReadXml(System.Xml.XmlReader reader)
{
Name = reader["name"];
if (!reader.IsEmptyElement)
reader.Skip();
reader.Read();
}
public void WriteXml(System.Xml.XmlWriter writer)
{
writer.WriteAttributeString("name", Name);
}
#endregion
}
If I serialize this with DataContractSerializer
as my root object I get:
<PersonDTO name="John Doe" xmlns="http://schemas.datacontract.org/2004/07/MyClrNamespace" />
I want the root name to be <Person>
and the root namespace to be "http://www.MyCompany.com"
, so I tried adding [DataContract]
like so:
[DataContract(Name = "Person", Namespace = "http://www.MyCompany.com")]
public partial class PersonDTO : IXmlSerializable
{
}
But when I do, DataContractSerializer
throws an exception stating Type 'PersonDTO' cannot be IXmlSerializable and have DataContractAttribute attribute:
System.Runtime.Serialization.InvalidDataContractException occurred
Message="Type 'PersonDTO' cannot be IXmlSerializable and have DataContractAttribute attribute."
Source="System.Runtime.Serialization"
StackTrace:
at System.Runtime.Serialization.XmlDataContract.XmlDataContractCriticalHelper..ctor(Type type)
at System.Runtime.Serialization.XmlDataContract..ctor(Type type)
at System.Runtime.Serialization.DataContract.DataContractCriticalHelper.CreateDataContract(Int32 id, RuntimeTypeHandle typeHandle, Type type)
at System.Runtime.Serialization.DataContract.DataContractCriticalHelper.GetDataContractSkipValidation(Int32 id, RuntimeTypeHandle typeHandle, Type type)
at System.Runtime.Serialization.DataContract.GetDataContract(RuntimeTypeHandle typeHandle, Type type, SerializationMode mode)
at System.Runtime.Serialization.DataContractSerializer.get_RootContract()
I know it is possible to modify the root name and namespace by using the DataContractSerializer(Type type,?String rootName,?String rootNamespace)
constructor when serializing manually:
var person = new PersonDTO { Name = "John Doe", };
var serializer = new DataContractSerializer(typeof(PersonDTO), "Person", @"http://www.MyCompany.com");
var sb = new StringBuilder();
using (var textWriter = new StringWriter(sb))
using (var xmlWriter = XmlWriter.Create(textWriter))
{
serializer.WriteObject(xmlWriter, person);
}
Console.WriteLine(sb);
// Outputs <Person name="John Doe" xmlns="http://www.MyCompany.com" />
But is there any way to do this automatically via attributes?
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