How to write a namespace in an Element with XmlWriter

Question

I'm changing my code from vbs to C#, but i have a problem with XMLwriter, how to use XML write to get such output in XML.file : ??

I have code like this :

using (XmlWriter writer = XmlWriter.Create(Form1.systemDrive + "\\unattend.xml"))
{
    writer.WriteStartDocument();
    writer.WriteProcessingInstruction("xml", "version='1.0' encoding='UTF-8'");
    writer.WriteStartElement("unattend");
    writer.WriteAttributeString("xmlns", "urn:schemas-microsoft-com:unattend"); // <<<<<<< Gives an error 

....

Answer 1

If you just want to put the unattend tag into the given namespace, don't use the WriteAttributeString at all and just use

writer.WriteStartElement("unattend","urn:schemas-microsoft-com:unattend");

If the namespace was assigned to a prefix, it will use the prefix, otherwise it will generate the necessary xmlns clause.

Also, the WriteStartDocument is redundant with the WriteProcessingInstruction . Both produce the same output, but you can only have one processing instruction, so you can use either one but not both.