LINQ to XML : Querying XML with Namespaces
This question arises in one of discussions. If you have a XML document with “xmlns” then LINQ to XML does not return any IEnumerable<T> J. This is strange but true for XPath and XQuery.
There is a trick to get it done,
Let us assume that you have a XML as follows,
<?xml version="1.0" encoding="utf-8"?>
<products xmlns="myns-com">
<product ProductID="1" CategoryID="1">
<ProductName>Chai</ProductName>
</product>
<product ProductID="2" CategoryID="1">
<ProductName>Chang</ProductName>
</product>
</products>
Now this code holds namespace and all the child element’s default namespace would be that one “myns-com”.
So if you try to write query against this XML
var query = from lst in XElement.Load(@"c:\NS.xml").Elements(“product")
select (int)lst.Attribute("ProductID");
foreach (var k in query)
{
Console.WriteLine(k);
}
This seems correct though it will not give you any output.
What you need to do is, you need to the namespace in the query,
XNamespace ns = "myns-com";
var query = from lst in XElement.Load(@"c:\NS.xml").Elements(ns+"product")
select (int)lst.Attribute("ProductID");
foreach (var k in query)
{
Console.WriteLine(k);
}
You will get the desired output as you may expect.
Namoskar!!!
