Can't get XPathSelectElements to work with XElement

I am creating an in-memory Xml tree using XElement. Here is a sample of my xml:

<Curve>
    <Function>createCurve</Function>
    <Parameters>
        <Input>
            <BaseCurve>
                <CurveType Type="String">16fSmoothCurve</CurveType>
                <Ccy Type="String">USD</Ccy>
                <Tenors>
                     <Item Type="String">1M</Item>
                     <Item Type="String">3M</Item>
                     <Item Type="String">1U</Item>
                     <Item Type="String">Z1</Item>
                 </Tenors>
                <Rates>
                    <开发者_JS百科Item Type="String">.02123</Item>
                    <Item Type="String">.02214</Item>
                    <Item Type="String">.021234</Item>
                    <Item Type="String">.02674</Item>
                </Rates>
            </BaseCurve>
        </Input>
    </Parameters>
</Curve>

I am creating the xml by chaining together XElements. For example,

var root = new XElement("Curve", 
    new XElement("Function", "createCurve"), 
    new XElement("Parameters"), etc);

I would then like to query the XElement via XPath. For example,

var tenors = root.XPathSelectElements("//Tenors/Item");
var rates = root.XPathSelectElements("//Rates/Item");

I can successfully select a single element, for example,

var firstTenor = root.XPathSelectElement("//Tenors/Item");
var firstRate = root.XPathSelectElement("//Rates/Item");

However, trying to select multiple elements give me 0 results.

I've tried creating an XDocument and querying off of that however I get the same results. I've also tried adding an XDeclaration to the beginning of the tree but no luck.

Why can I not query multiple elements from my XElement tree?

Thanks!

Drew

Use XmlNodeList:

XmlNodeList nodesXml = root.SelectNodes("//Tenors/Item");
foreach (XmlNode item in nodList)
        {
            var tenors = item.InnerText;
        }

That what I do, and it works perfect.