Question

WebService, remove root tag attributes

Asked by: AlvinBeach

I have a WebService that has a WebMethod that returns a custom structure. I accomplished this by using the XmlSerializer on a custom object. This custom object was created from a XSD (Xml Schema Diagram) using the xsd.exe tool. The output from the WebMethod is correct expect that the XmlSerializer appends the following Namespaces to the RootTag:

<RootTag xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <field1></field1>
   <field2></field2>
</RootTag>

The XmlSerializer variable is called 'xs'  and when I set 'xs.Namespaces = False' it is suppose to not have Namespace support. However, when I run the WebMethod like this, I get an exception:

System.InvalidOperationException: There was an error generating the XML document. ---> System.ArgumentException: Cannot set the namespace if Namespaces is 'false'.
   at System.Xml.XmlTextWriter.WriteStartAttribute(String prefix, String localName, String ns)
   at System.Xml.Serialization.XmlSerializationWriter.WriteAttribute(String prefix, String localName, String ns, String value)
   at System.Xml.Serialization.XmlSerializationWriter.WriteStartElement(String name, String ns, Object o, Boolean writePrefixed)
   at System.Xml.Serialization.XmlSerializationWriter.WriteStartElement(String name, String ns, Object o)


My guess is that I need to indicate to the XmlSerializationWriter to pass in null or string.Empty as the parameter for WriteStartElement(..,String ns,...);

My question:

How can I get the WebMethod/XmlSerializer to not output these Namespaces?

Thank you,

Alvin

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Asked On
2003-06-23 at 08:37:05ID20657077
Tags

webservice

Topics

.NET

,

Extensible HTML (XHTML)

Participating Experts
1
Points
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Comments
2

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Answers

 

by: AlvinBeachPosted on 2003-06-23 at 10:00:28ID: 8782973

Ok, I have found the solution.

The solution is to create an instance of a XmlSerializerNamespaces object. Then add an empty prefix and namespace to the collection. Then pass the XmlSerializerNamspaces object to the Serialize() method call. Here's some code to illustrate this:

XmlTextWriter writer =  new XmlTextWriter(this.Context.Response.OutputStream, System.Text.Encoding.UTF8);

XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("","");
xs.Serialize(writer,myObject, ns);

This will remove any attribute tags that are on the root tag.


 

by: ChmodPosted on 2003-06-23 at 12:37:54ID: 8784039

PAQ'd & points refunded

Chmod
Community Support Moderator @Experts Exchange

20120131-EE-VQP-002

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