How to insert xmlns attribute into an XML file

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Hi,

I have an XML file and I need to insert xmlns="my namespace url" into the root element.

Also I need to insert xmlns="" into all elements.

How can I do that?
Also it is possible to do this (add xmlns="" into all elements) without looping through each node?

Thanks in advance

Regards.

Posted 3-Feb-11 2:06am

maheshk_blr

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AspDotNetDev · Answer 1 · 2011-02-03T07:49:00

Solution 2

I don't think this is what you are looking for exactly or the best way to do things, but I thought I'd add it here in case it leads you to a better solution:

C#

private void TestDocument()
{
    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<animal><dog>Doggo</dog><cat>Catsy</cat></animal>");
    AddAttribute(doc.DocumentElement, "xmlns", "");
    StringWriter sw = new StringWriter();
    XmlTextWriter xtw = new XmlTextWriter(sw);
    doc.WriteTo(xtw);
    MessageBox.Show(sw.ToString());
}

private void AddAttribute(XmlNode node, string attribute, string value)
{
    if (node.NodeType == XmlNodeType.Element)
    {
        node.Attributes.Append(node.OwnerDocument.CreateAttribute(attribute));
        node.Attributes[attribute].Value = value;
        foreach (XmlNode subnode in node.ChildNodes)
        {
            AddAttribute(subnode, attribute, value);
        }
    }
}

Posted 3-Feb-11 7:49am

AspDotNetDev

Comments

maheshk_blr 4-Feb-11 4:39am

Thanks, this helped me to resolve my problem, below is the code I have written.

XDocument doc = XDocument.Load(My XML File Path);

XElement rootElement = doc.Element(doc.Root.Name);
XAttribute att = new XAttribute("xmlns", "Namespace name");
XAttribute att1 = new XAttribute("xmlns", "");
rootElement.Add(att);

XElement[] allElements = doc.Elements().ToArray();

foreach (XElement ele in allElements.Nodes()) {
ele.Add(att1);
}

StringWriter sw = new StringWriter();
XmlTextWriter xtw = new XmlTextWriter(sw);
doc.WriteTo(xtw);
MessageBox.Show(sw.ToString());

I would like to remove foreach from the above code segment, yet achieve the same results, is that possible?

AspDotNetDev 5-Feb-11 4:32am

You can technically do it without a foreach loop, but I don't think this is what you are looking for (I'm not really sure what you're looking for):

new List<xelement>(doc.Descendants()).ForEach((ele) => ele.Add(att));

maheshk_blr 7-Feb-11 5:19am

Thanks,

Below is my scenario, in which I needed the above. If you can suggest me some better way, please

I am getting an XML file form a source (assume it is a folder), which I need to validate against an XSD file, I am using below code to do that.

List<string> arrerrors = new List<string>();
XDocument doc = XDocument.Load("My XML Path");
XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add(null, "My XSD Path");
bool errors = false;

doc.Validate(schemas, (o, e) => {
arrerrors.Add(e.Message);
errors = true;
});

Please note that my XSD has a namespace, which XML does not have and I am trying to manually add it (for that I have asked the above question). If I dont add the namespace to XML, XDocument.Validate() fails to validate the xml. after manually adding the namespace to XML I am getting the xml validated against the XSD.

Since I am very new to XML and XSD, I am not very sure whether my approach is good or not.

Can u please suggest?

Thank you very much for your time and help.