我无法从我的XML中获取元素。我无法从我的XML中获取Vehicles或Vehicle元素,它总是返回null。
任何人都可以看到我出错的地方吗?
这是我的代码......
[TestMethod]
public void TestDeleteVehicleFromXMLFile()
{
using (FileStream stream = new FileStream(base._TestXPathXMLFile, FileMode.Open))
{
try
{
XDocument xDoc = XDocument.Load(stream);
var q = from RootNode in xDoc.Descendants("VehicleCache")
select new
{
// Vehicles & VehiclesList is always null
Vehicles = RootNode.Elements(XName.Get("Vehicle")).ToList(),
VehiclesList = RootNode.Elements(XName.Get("Vehicles")).ToList(),
SelfNode = RootNode.DescendantNodesAndSelf().ToList(),
DescendantNodes = RootNode.DescendantNodes().ToList()
};
// used to see what is in item
foreach (var item in q)
{
int i = 0;
}
}
catch(Exception E)
{
Assert.Fail(E.Message);
}
}
}
<VehicleCache>
<Vehicles xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.myURL.co.uk">
<Vehicle>
<CapCode>41653</CapCode>
<TrueCap i:nil="true" />
<VehicleID>365789</VehicleID>
<ViperVehicleID i:nil="true" />
<BodyTypeID>5</BodyTypeID>
</Vehicle>
<Vehicle>
<CapCode>42565</CapCode>
<TrueCap i:nil="true" />
<VehicleID>365845</VehicleID>
<ViperVehicleID i:nil="true" />
<BodyTypeID>2</BodyTypeID>
</Vehicle>
</Vehicles>
答案 0 :(得分:9)
定义XNamespace
XNamespace ns = "http://www.myURL.co.uk";
使用:
Vehicles = RootNode.Elements(XName.Get(ns + "Vehicle")).ToList(),
或者,如果您想避免使用命名空间,请尝试:
var result = xDoc.Descendants().Where(r => r.Name.LocalName == "VehicleCache");
答案 1 :(得分:3)
您需要包含命名空间。
XNamespace Snmp = "http://www.myURL.co.uk";
对于root后代,您还需要包含名称空间。
var q = from RootNode in xDoc.Descendants(Snmp +"VehicleCache")
像这样
Vehicles = RootNode.Elements(XName.Get(Snmp + "Vehicle")).ToList()//snmp is the namespace