C# – how to add xml namespaces

apicnamespacesxml

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–

Best Answer

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();
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