How to prevent blank xmlns attributes in output from .NET’s XmlDocument?

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Thanks to Jeremy Lew’s answer and a bit more playing around, I figured out how to remove blank xmlns attributes: pass in the root node’s namespace when creating any child node you want not to have a prefix on. Using a namespace without a prefix at the root means that you need to use that same namespace on child elements for them to also not have prefixes.

Fixed Code:

XmlDocument xml = new XmlDocument();
xml.AppendChild(xml.CreateElement("root", "whatever:name-space-1.0"));
xml.DocumentElement.AppendChild(xml.CreateElement("loner", "whatever:name-space-1.0")); 
Console.WriteLine(xml.OuterXml);

Thanks everyone to all your answers which led me in the right direction!

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