How do I add a namespace when creating an XML file?

Question

I have to create an XML document in C#.

The root element has to look like this:

<valuation-request 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:noNamespaceSchemaLocation="valuations.xsd">

I'm using the following

XmlElement root = X.CreateElement("valuation-request");
root.SetAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
root.SetAttribute("xsi:noNamespaceSchemaLocation", "valuations.xsd");

However this produces

<valuation-request 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     noNamespaceSchemaLocation="valuations.xsd"> //missing the xsi:

What am I missing?

George Stocker · Accepted Answer · 2011-02-08 12:14:06Z

8

Use the overload of SetAttribute, that takes namespace as well:

root.SetAttribute("noNamespaceSchemaLocation", 
    "http://www.w3.org/2001/XMLSchema-instance", 
    "valuations.xsd"
);

edited Feb 8, 2011 at 12:14

George Stocker

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answered Feb 8, 2011 at 11:41

Mubashir Khan

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4 Comments

Steven Over a year ago

I'm using root.SetAttribute("xsi:noNamespaceSchemaLocation", "valuations.xsd");. how would you suggest it should look?

Mubashir Khan Over a year ago

try this root.SetAttribute("noNamespaceSchemaLocation", "valuations.xsd","w3.org/2001/XMLSchema-instance");

Steven Over a year ago

That returns <valuation-request xmlns:xsi="w3.org/2001/XMLSchema-instance" d1p1:noNamespaceSchemaLocation="w3.org/2001/XMLSchema-instance" xmlns:d1p1="valuations.xsd">

Steven Over a year ago

I swapped them round to look like root.SetAttribute("noNamespaceSchemaLocation", "w3.org/2001/XMLSchema-instance", "valuations.xsd"); ...bish bash bosh.. cheers

RokX · Accepted Answer · 2013-09-12 11:23:50Z

0

With writer you add it like this:

var writerSettings = new XmlWriterSettings
        {
            Indent = true,
            IndentChars = " ",
            NewLineChars = Environment.NewLine,
            NewLineHandling = NewLineHandling.Replace,
            Encoding = new UTF8Encoding(false)
        };

XmlWriter writer = XmlWriter.Create("C:\test.xml", writerSettings);
writer.WriteStartDocument(false);
writer.WriteStartElement("valuation-request");
writer.WriteAttributeString("xmlns", "xsi", null, "http://www.w3.org/2001/XMLSchema-instance");
writer.WriteAttributeString("xsi", "noNamespaceSchemaLocation", null, "http://www.gzs.si/e-poslovanje/sheme/eSLOG_1-5_EnostavniRacun.xsd");

answered Sep 12, 2013 at 11:23

RokX

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Comments

Scipius2012 · Accepted Answer · 2015-01-30 13:48:11Z

0

Recently, I have encountered same issue. To resolve it, I've just add the follow line:

XmlAttribute noNamespaceSchemaLocationAttr = xmlDoc.CreateAttribute("xsi", "noNamespaceSchemaLocation", "http://www.w3.org/2001/XMLSchema-instance");

answered Jan 30, 2015 at 13:48

Scipius2012

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1 Comment

user4628051 Over a year ago

that works just fine on my Code. Important to me was the XMLSchema-instance part

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