psgg1981
03-16-2004, 09:24 AM
I'm building an xml document with XML Document Object Model (DOM) with System.Xml library in .NET.
It seems that when validating the document the XmlDocument class (which implements the DOM) detects a syntax error. Then I get this exception info: "Cannot use a prefix with an empty namespace"
While debugging, I checked the actual Xml document encapsulated in the XmlDocument class. It looks like this (don't mind the escape characters):
<?xml version=\"1.0\" encoding=\"utf-8\"?>
<s:Envelope encodingStyle=\"http://www.w3.org/2003/05/soap-encoding\" xmlns:s=\"http://www.w3.org/2003/05/soap-envelope\">
<s:Body>
<u:SetTarget xmlns:u=\"urn:schemas-upnp-org:service:SwitchPower:1\">
<newTargetValue>1</newTargetValue>
</u:SetTarget>
</s:Body>
</s:Envelope>
My immediate question is: does the Body element require an xmlns namespace since it uses the same as its parent, Envelope?
It seems that when validating the document the XmlDocument class (which implements the DOM) detects a syntax error. Then I get this exception info: "Cannot use a prefix with an empty namespace"
While debugging, I checked the actual Xml document encapsulated in the XmlDocument class. It looks like this (don't mind the escape characters):
<?xml version=\"1.0\" encoding=\"utf-8\"?>
<s:Envelope encodingStyle=\"http://www.w3.org/2003/05/soap-encoding\" xmlns:s=\"http://www.w3.org/2003/05/soap-envelope\">
<s:Body>
<u:SetTarget xmlns:u=\"urn:schemas-upnp-org:service:SwitchPower:1\">
<newTargetValue>1</newTargetValue>
</u:SetTarget>
</s:Body>
</s:Envelope>
My immediate question is: does the Body element require an xmlns namespace since it uses the same as its parent, Envelope?