Develop Reference

Unable select XmlNode by Xpath with two attributes

I have xml as a response, need to find marked red arrow node:
My code:
//response to xmlDocument
document = new XmlDocument();
document.LoadXml(response.Content);
XmlNamespaceManager ns = new XmlNamespaceManager(document.NameTable);
foreach (XmlAttribute curAttribute in document.DocumentElement.Attributes)
{
if (curAttribute.Prefix.Equals("xmlns"))
{ ns.AddNamespace(curAttribute.LocalName, curAttribute.Value); }
}
string xpath = "//edmx:Edmx/edmx:DataServices/Schema[#Namespace='Core.Entities']/EntityType[#Name='Office']/Property[#Name='OfficeKeyNumeric']";
XmlNode node = document.SelectSingleNode(xpath, ns);
}
I have an error that node can't be found by given XPath, node is null.
What I tried:
with and
string xpath = "//edmx:Edmx/edmx:DataServices/Schema[#Namespace='Core.Entities' and #xmlns='http://docs.oasis-open.org/odata/ns/edm']/EntityType[#Name='Office']/Property[#Name='OfficeKeyNumeric']";
without and
string xpath = "//edmx:Edmx/edmx:DataServices/Schema[#Namespace='Core.Entities'][#xmlns='http://docs.oasis-open.org/odata/ns/edm']/EntityType[#Name='Office']/Property[#Name='OfficeKeyNumeric']";
Tried also with pipe |, & - nothing helped.
Why it doesn't work and is it possible to make it work in that way?
The only one working solution I'm using now is to remove xmlns="http://docs.oasis-open.org/odata/ns/edm"from XML document before loading, after that my code above works fine.
document.LoadXml(response.Content.Replace("xmlns=\"http://docs.oasis-open.org/odata/ns/edm\"", ""));

The Schema element and its descendants are declared in the http://docs.oasis-open.org/odata/ns/edm namespace, which must be referenced in the
xpath statement you are looking for.
string xpath = "//edmx:Edmx/edmx:DataServices/edm:Schema[#Namespace='Core.Entities']/edm:EntityType[#Name='Office']/edm:Property[#Name='OfficeKeyNumeric']";
Make sure to have your XmlNamespaceManager initialized with these namespaces.
XmlNamespaceManager ns = new XmlNamespaceManager(document.NameTable);
ns.AddNamespace("edmx","http://docs.oasis-open.org/odata/ns/edmx");
ns.AddNamespace("edm","http://docs.oasis-open.org/odata/ns/edm");

Getting XML node using XPath returns null

I am trying to get a node in a simple XML, but no matter what I try I always get null.
I am guessing that the issue is the namespace.
I am simply trying to get the value of the ID element, 331377697.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("E:\\0323.xml");
XmlNamespaceManager manager = new XmlNamespaceManager(xmlDoc.NameTable);
manager.AddNamespace("cac", "http://xxxxxx Some URL XXXX");
manager.AddNamespace("cbc", "http://xxxxxx Some URL XXXX");
string query = "/StandardBusinessDocument/Invoice/cbc:ID";
XmlNode xmlNode = xmlDoc.SelectSingleNode(query, manager);
The XML:
<StandardBusinessDocument xmlns="http://www.unece.org/cefact/namespaces/StandardBusinessDocumentHeader">
<StandardBusinessDocumentHeader>
...
</StandardBusinessDocumentHeader>
<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:ccts="urn:un:unece:uncefact:documentation:2"
...
</Invoice>
<cbc:UBLVersionID>2.1</cbc:UBLVersionID>
<cbc:CustomizationID>1234</cbc:CustomizationID>
<cbc:ProfileID>1234564</cbc:ProfileID>
<cbc:ID>331377697</cbc:ID>
<cbc:IssueDate>2017-03-23</cbc:IssueDate>
<cbc:InvoiceTypeCode listID="UNCL1001">380</cbc:InvoiceTypeCode>
<cbc:DocumentCurrencyCode listID="ISO4217">NOK</cbc:DocumentCurrencyCode>
<cac:OrderReference>
<cbc:ID>146136</cbc:ID>
</cac:OrderReference>
...

You must specify the exact namespaces.
Also you have to specify namespace prefixes for all elements in the XPath.
manager.AddNamespace("nsDoc", "http://www.unece.org/cefact/namespaces/StandardBusinessDocumentHeader");
manager.AddNamespace("nsInvoice", "urn:oasis:names:specification:ubl:schema:xsd:Invoice-2");
manager.AddNamespace("cbc", "urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2");
string query = "/nsDoc:StandardBusinessDocument/nsInvoice:Invoice/cbc:ID";
It's supposed to work.

C# and XML: Why is XMLNS attirubute set to all child nodes?

Here is what I have attempted:
Creating elements:
XmlNode xHeader = xDoc.CreateElement("Customer");
XmlNode xCustomerID = xDoc.CreateElement("Customer_ID", strListName);
XmlNode xName = xDoc.CreateElement("Full_Name");
XmlNode xEmail = xDoc.CreateElement("Email");
XmlNode xHomeAddress = xDoc.CreateElement("Home_Address");
XmlNode xMobileNumber = xDoc.CreateElement("Mobile_Number");
Appending nodes to document.
xDoc.DocumentElement.AppendChild(xHeader);
xHeader.AppendChild(xCustomerID);
xCustomerID.AppendChild(xEmail);
xCustomerID.AppendChild(xHomeAddress);
xCustomerID.AppendChild(xMobileNumber);
This is what the is generated in the XML. http://pastebin.com/dNs8Ueiw
I want there to be no xmlns = "" in the child nodes of Customer_ID.

If you want XML of:
<Customer_ID xmlns="a">
<Email>
</Email>
<Home_Address>
</Home_Address>
<Mobile_Number>
</Mobile_Number>
</Customer_ID>
... then you need to make sure your Email, Home_Address and Mobile_Number elements are all in the same namespace as your Customer_ID element:
XmlNode xCustomerID = xDoc.CreateElement("Customer_ID", strListName);
XmlNode xEmail = xDoc.CreateElement("Email", strListName);
XmlNode xHomeAddress = xDoc.CreateElement("Home_Address", strListName);
XmlNode xMobileNumber = xDoc.CreateElement("Mobile_Number", strListName);
Basically you're seeing the result of namespace defaulting - unless an xmlns=... is specified for an element, it inherits the namespace of its parent.
(Also note that if you can, you should use LINQ to XML - it's a much more pleasant XML API, with nicer namespace handling.)

Selecting Particular Node List in XML

<Report xmlns="Microsoft.SystemCenter.DataWarehouse.Report.Alert" xmlns:p1="w3.org/2001/XMLSchema-instance"; Name="Microsoft.SystemCenter.DataWarehouse.Report.Alert" p1:schemaLocation="Microsoft.SystemCenter.DataWarehou?Schema=True">
<Title>Alert Report</Title>
<Created>6/27/2013 9:32 PM</Created>
<StartDate>6/1/2013 9:29 PM</StartDate>
<EndDate>6/27/2013 9:29 PM</EndDate>
<TimeZone>(UTC)</TimeZone>
<Severity>Warning, Critical</Severity>
<Priority>Low, Medium, High</Priority>
<AlertTable>
<Alerts>
<Alert>
<AlertName></AlertName>
<Priority></Priority>
</Alert>
</Alerts>
</AlertTable>
</Report>
So I'm trying to pull down the list of nodes that appear under Alerts child. So /Report/AlertTable/Alerts.
I've done very similar before but in this format it is not working for some reason. Can someone point me out in the right direction?
XmlDocument Log = new XmlDocument();
Log.Load("test.xml");
XmlNodeList myLog = Log.DocumentElement.SelectNodes("//Report/AlertTable/Alerts");
foreach (XmlNode alert in myLog)
{
Console.Write("HERE");
Console.WriteLine(alert.SelectNodes("AlertName").ToString());
Console.WriteLine(alert.SelectNodes("Priority").ToString());
Console.Read();
}
EDIT:
One of the responses had me try to use a bunch of namespace with p1 but had no such luck.
EDIT:
Did not work either:
var name = new XmlNamespaceManager(log.NameTable);
name.AddNamespace("Report", "http://www.w3.org/2001/XMLSchema-instance");
XmlNodeList xml = log.SelectNodes("//Report:Alerts", name);

From a site:
nodename Selects all nodes with the name "nodename"
/ Selects from the root node
// Selects nodes in the document from the current node that match the selection no matter where they are
So I believe
"/AlertTable/Alerts"
would work, as that would be 'from the root node' as well as
"Report/AlertTable/Alerts"
XPath Site

Figured this sucker out.
It had to do with the namespace of "Microsoft.SystemCenter.DataWarehouse.Report.Alert". Changing this to anything but that won't read the XML properly.
XmlDocument log = new XmlDocument();
log.Load(#"C:\Users\barranca\Desktop\test.xml");
// XmlNodeList xml = log.SelectNodes("//ns1:Alerts");
var name = new XmlNamespaceManager(log.NameTable);
name.AddNamespace("ns1", "Microsoft.SystemCenter.DataWarehouse.Report.Alert");
XmlNodeList xml = log.SelectNodes("//ns1:Alert", name);
foreach (XmlNode alert in xml)
{
Console.Write("HERE");
XmlNode test = alert.SelectSingleNode("//ns1:AlertName",name);
string testing = test.InnerText;
Console.Write(testing);
}

XML - how to use namespace prefixes

I have this XML at http://localhost/file.xml:
<?xml version="1.0" encoding="utf-8"?>
<val:Root xmlns:val="http://www.hw-group.com/XMLSchema/ste/values.xsd">
<Agent>
<Version>2.0.3</Version>
<XmlVer>1.01</XmlVer>
<DeviceName>HWg-STE</DeviceName>
<Model>33</Model>
<vendor_id>0</vendor_id>
<MAC>00:0A:DA:01:DA:DA</MAC>
<IP>192.168.1.1</IP>
<MASK>255.255.255.0</MASK>
<sys_name>HWg-STE</sys_name>
<sys_location/>
<sys_contact>
HWg-STE:For more information try http://www.hw-group.com
</sys_contact>
</Agent>
<SenSet>
<Entry>
<ID>215</ID>
<Name>Home</Name>
<Units>C</Units>
<Value>27.7</Value>
<Min>10.0</Min>
<Max>40.0</Max>
<Hyst>0.0</Hyst>
<EmailSMS>1</EmailSMS>
<State>1</State>
</Entry>
</SenSet>
</val:Root>
I am trying to read this from my c# code:
static void Main(string[] args)
{
var xmlDoc = new XmlDocument();
xmlDoc.Load("http://localhost/file.xml");
XmlElement root = xmlDoc.DocumentElement;
// Create an XmlNamespaceManager to resolve the default namespace.
XmlNamespaceManager nsmgr = new XmlNamespaceManager(xmlDoc.NameTable);
nsmgr.AddNamespace("val", "http://www.hw-group.com/XMLSchema/ste/values.xsd");
XmlNodeList nodes = root.SelectNodes("/val:SenSet/val:Entry");
foreach (XmlNode node in nodes)
{
string name = node["Name"].InnerText;
string value = node["Value"].InnerText;
Console.Write("name\t{0}\value\t{1}", name, value);
}
Console.ReadKey();
}
}
Problem is that the node is empty. I understand this is a common newbie problem when reading XML, still not able to solve what I am doing wrong, probably something with the Namespace "val" ?

You need to pass the namespace manager into the SelectNodes()
method.
Edit: corrected code
XmlNodeList nodes = root.SelectNodes("/val:Root/SenSet/Entry", nsmgr);

Just change you Xpath to:
XmlNodeList nodes1 = root.SelectNodes("/val:Root/SenSet/Entry",nsmgr);
Or:
XmlNodeList nodes = root.SelectNodes("SenSet/Entry");

Your xpath query string should be:
XmlNodeList nodes = root.SelectNodes("/val:Root/SenSet/Entry", nsmgr);
or more concisely,
XmlNodeList nodes = root.SelectNodes("//SenSet/Entry", nsmgr);