how to add xml namespaces

Question

This feed (snippit of it) needs to look exactly like this:

<AmazonEnvelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                xsi:noNamespaceSchemaLocation="amzn-envelope.xsd">

what do I add to this C# code to add that extra xmlns, xsi junk:

writer.WriteStartDocument();
writer.WriteStartElement("AmazonEnvelope");

this feed is rejected without it--

You haven't mentioned which programming language you're using. One assumes C# because WriteStartDocument is a method on XmlWriter, but that's not a guarantee. — Randolpho
– Randolpho, Commented May 29, 2009 at 21:01
It says "C#" in the middle of the line just below the XML fragment..... — marc_s
– marc_s, Commented May 29, 2009 at 21:11

baretta · Accepted Answer · 2009-05-29 21:29:09Z

8

Try this:

writer.WriteStartElement("AmazonEnvelope");
writer.WriteAttributeString(
  "xmlns", "xsi", null, "http://www.w3.org/2001/XMLSchema-instance");
writer.WriteAttributeString(
  "xsi", "noNamespaceSchemaLocation", null, "amzn-envelope.xsd");
...
writer.WriteEndElement();

answered May 29, 2009 at 21:29

baretta

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1 Comment

Scott Kramer Over a year ago

wow, i learn so much here!! I'm moving along now... amazon accepted the feed... touchy api!!

Marc Gravell · Accepted Answer · 2009-05-29 21:34:10Z

5

Is .NET 3.5 an option?

XNamespace ns = "http://www.w3.org/2001/XMLSchema-instance";

string s = new XElement("AmazonEnvelope",
    new XAttribute(XNamespace.Xmlns + "xsi", ns),
    new XAttribute(ns + "noNamespaceSchemaLocation", "amzn-envelope.xsd")
).ToString();

or with XmlWriter:

const string ns = "http://www.w3.org/2001/XMLSchema-instance";
writer.WriteStartDocument();
writer.WriteStartElement("AmazonEnvelope");
writer.WriteAttributeString("xmlns", "xsi", "", ns);
writer.WriteAttributeString("xsi", "noNamespaceSchemaLocation",
      ns, "mzn-envelope.xsd");
writer.WriteEndDocument();

edited May 29, 2009 at 21:34

answered May 29, 2009 at 21:27

Marc Gravell

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