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Suppose you need to generate the following XML:
   1: <GenevaLoader xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   2: xsi:schemaLocation="http://www.advent.com/SchemaRevLevel401/Geneva masterschema.xsd" 
   3: xmlns="http://www.advent.com/SchemaRevLevel401/Geneva">
   4:   <PriceRecords>
   5:     <PriceRecord>
   6:     </PriceRecord>
   7:   </PriceRecords>
   8: </GenevaLoader>
Normally you would write the following C# code to accomplish this:
   1: const string ns = "http://www.advent.com/SchemaRevLevel401/Geneva";
   2: XNamespace xnsp = ns;
   3: XNamespace xsi = XNamespace.Get("http://www.w3.org/2001/XMLSchema-instance");
   4:  
   5: XElement root = new XElement( xnsp + "GenevaLoader",  
   6:   new XAttribute(XNamespace.Xmlns + "xsi", xsi.NamespaceName), 
   7:   new XAttribute( xsi + "schemaLocation", "http://www.advent.com/SchemaRevLevel401/Geneva masterschema.xsd"));
   8:  
   9: XElement priceRecords = new XElement("PriceRecords");
  10: root.Add(priceRecords);
  11:  
  12:     for(int i = 0; i < 3; i++)
  13:     {
  14:         XElement price = new XElement("PriceRecord");
  15:        priceRecords.Add(price);
  16:     }
  17:  
  18:     doc.Save("geneva.xml");
The problem with this approach is that it adds a additional empty xmlns arrtribute on the “PriceRecords” element, like so :
   1: <GenevaLoader xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.advent.com/SchemaRevLevel401/Geneva masterschema.xsd" xmlns="http://www.advent.com/SchemaRevLevel401/Geneva">
   2:   <PriceRecords xmlns="">
   3:     <PriceRecord>
   4:     </PriceRecord>
   5:   </PriceRecords>
   6: </GenevaLoader>
The solution is to add the xmlns NameSpace in code to each child and grandchild elements of the root element like so :
   1: XElement priceRecords = new XElement( xnsp + "PriceRecords");
   2: root.Add(priceRecords);
   3:  
   4: for(int i = 0; i < 3; i++)
   5: {
   6:     XElement price = new XElement(xnsp + "PriceRecord");
   7:    priceRecords.Add(price);
   8: }
Posted on Friday, May 21, 2010 11:47 AM | Back to top


Comments on this post: LinqToXML removing empty xmlns attributes & adding attributes like xmlns:xsi, xsi:schemaLocation to Elements

# re: LinqToXML removing empty xmlns attributes & adding attributes like xmlns:xsi, xsi:schemaLocation to Elements
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good solution
Left by sateesh on Dec 26, 2010 9:29 PM

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