removing namespace tag (xmlns:) from XMLSerializer

Question

I want to generate following xml output in my C# code :

<?xml version="1.0" encoding="utf-16"?>
<CallConnectReq Xmlns="urn:interno-com:ns:a9c" reqId="9" msgNb="2">
  <LocalCallId>0</LocalCallId>
</CallConnectReq>

right now I am achieving this as follows:

var xnameSpace = new XmlSerializerNamespaces();
                xnameSpace.Add("Xmlns", Constants.XmlNameSpaceValue);
                var xmlSerializer = new XmlSerializer(objToSerialize.GetType());
                var stringWriter = new StringWriter();
                xmlSerializer.Serialize(stringWriter, objToSerialize, xnameSpace);
                return stringWriter.ToString().**Replace("xmlns:","");**

But I want to remove "xmlns:" tag without using Replace() method. Is there any way to do it?

possible duplicate of XmlSerializer: remove unnecessary xsi and xsd namespaces — jgauffin
– jgauffin, Commented Dec 22, 2011 at 7:35
@deathrace - what does the type look like, and what is the current xml looking like? — Marc Gravell
– Marc Gravell, Commented Dec 22, 2011 at 7:51
@jgauffin (my previous comment was incorrect, btw) - it is certainly related, but the syntax to get a default namespace is subtly different, and requires other changes to the type definition - sufficiently enough to be separate, IMO — Marc Gravell
– Marc Gravell, Commented Dec 22, 2011 at 7:55
@deathrace you really don't want Xmlns="...", for the simple reason that that isn't a valid namespace qualifier; it must be xmlns="..." — Marc Gravell
– Marc Gravell, Commented Dec 22, 2011 at 7:56
If I remove .Replace() method, It gives: <CallConnectReq xmlns:Xmlns="urn:intrado-com:ns:a9c" reqId="9" msgNb="2"/> — deathrace
– deathrace, Commented Dec 22, 2011 at 8:15

Marc Gravell · Accepted Answer · 2011-12-22 07:54:04Z

4

To add just the default namespace:

var xnameSpace = new XmlSerializerNamespaces();
xnameSpace.Add("", "urn:interno-com:ns:a9c");
var ser = new XmlSerializer(typeof (CallConnectRequest));
ser.Serialize(destination, new CallConnectRequest(), xnameSpace);

with:

[XmlRoot("CallConnectReq", Namespace = "urn:interno-com:ns:a9c")]
public class CallConnectRequest {}

edited Dec 22, 2011 at 7:54

answered Dec 22, 2011 at 7:48

Marc Gravell

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7 Comments

deathrace Over a year ago

still it gives following output : <?xml version="1.0" encoding="utf-16"?> <CallConnectReq xmlns:Xmlns="urn:intrado-com:ns:a9c" reqId="9" msgNb="2" xmlns="xmlns="urn:intrado-com:ns:a9c""> <LocalCallId>0</LocalCallId> </CallConnectReq> I want to remove 'xmlns:' from this.

Marc Gravell Over a year ago

@deathrace then you misapplied the change; you shouldn't have the "Xmlns" in xnameSpace.Add. It looks like you have: xnameSpace.Add("Xmlns", "urn:blah") - but that is not what I put in my answer

deathrace Over a year ago

Ohh, my mistake. That worked fine. actually problem was I was using XmlType instead of XmlRoot. Thank you very much.

deathrace Over a year ago

just one problem here again. its adding q1: at each node: <q1:CallConnectReq xmlns="urn:intrado-com:ns:a9c" reqId="9" msgNb="2" xmlns:q1="xmlns="urn:intrado-com:ns:a9c""/>

Marc Gravell Over a year ago

@deathrace.dj you have extra quotes in your Namespace one... I'm guessing you have XmlRoot(..., Namespace="xmlns=\"blah\"") - again, please compare to what I have in the example; just the namespace

|

Marc Gravell · Accepted Answer · 2011-12-22 08:38:26Z

If you genuinely want Xmlns (which, to restate, I strongly believe is a typo of xmlns, and if not: is a bad choice in that it adds confusion), then:

var xnameSpace = new XmlSerializerNamespaces();
xnameSpace.Add("", "");
var ser = new XmlSerializer(typeof (CallConnectRequest));
ser.Serialize(destination, new CallConnectRequest {
    RequestId = 9,
    MessageNumber = 2,
    LocalCallId = 0
}, xnameSpace);

using:

[XmlRoot("CallConnectReq")]
public class CallConnectRequest {
    [XmlAttribute("Xmlns"), Browsable(false)]
    [EditorBrowsable(EditorBrowsableState.Never)]
    public string XmlNamespace {
        get { return "urn:interno-com:ns:a9c";} set { }
    }
    [XmlAttribute("reqId")]
    public int RequestId { get; set; }
    [XmlAttribute("msbNb")]
    public int MessageNumber { get; set; }

    [XmlElement("LocalCallId")]
    public int LocalCallId { get; set; }
}

which writes:

<?xml version="1.0" encoding="ibm850"?>
<CallConnectReq Xmlns="urn:interno-com:ns:a9c" reqId="9" msbNb="2">
  <LocalCallId>0</LocalCallId>
</CallConnectReq>

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