From the following XML, I want to find a value based on the Employer.
<?xml version="1.0" encoding="UTF-8"?>
<Document>
<Details>
<Employer>Taxes</Employer>
<Adr>
<Strt>Street</Strt>
<Twn>Town</Twn>
</Adr>
</Details>
<DetailsAcct>
<Recd>
<Payroll>
<Id>9</Id>
</Payroll>
</Recd>
<br>
<xy>A</xy>
</br>
</DetailsAcct>
</Document>
the C# code I applied is
detail = root.SelectSingleNode($"//w:Document//w:Employer[contains(text(), 'Taxes']/ancestor::Employer",nsmgr);
But it gives me an invalid token error.
What am I missing?
The error was due to [contains(...], notice closing parentheses is missing. And since you want to return Employer element, no need for ancestor::Employer here :
//w:Document//w:Employer[contains(., 'Taxes')]
If the XML posted resembles structure of the actual XML (except the namespaces), better to use more specific XPath i.e avoid using costly // :
/w:Document/w:Details/w:Employer[contains(., 'Taxes')]
An alternative is to use LINQ to XML.
If the XML is in a string:
string xml = "<xml goes here>";
XDocument document = XDocument.Parse(xml);
XElement element = document.Descendants("Employer").First();
string value = element.Value;
If the XML is in a .xml file:
XDocument document = XDocument.Load("xmlfile.xml");
XElement element = document.Descendants("Employer").First();
string value = element.Value;
You can also find an employer element with a specific value, if that's what you need:
XElement element = document.Descendants("Employer").First(e => e.Value == "Taxes");
Note: this will throw an exception if no element is found with the specified value. If that is not acceptable, then you can replace .First(...) with .FirstOrDefault(...) which will simply return null if no element is found.
Related
<?xml version="1.0"?>
<TextType IsKey="false" Name="XMLReport"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Providers
xmlns="Reporting"/>
<Sales
xmlns="Reporting"/>
<Value
xmlns="Reporting">
<?xml version="1.0" encoding="utf-8"?>
<TestReport>
<StudyUid>
<![CDATA[123]]>
</StudyUid>
<Modality>
<![CDATA[XYZ]]>
</Modality>
<StudyDate format="DICOM">123456</StudyDate>
<StudyTime format="DICOM">6789</StudyTime>
<AccessionNumber>
<![CDATA[123]]>
</AccessionNumber>
<StudyDescription>
<![CDATA[abc def]]>
</StudyDescription>
<OperatorName format="xyz">
<![CDATA[abc]]>
</OperatorName>
<PhysicianReadingStudy format="xyz">
<![CDATA[^^^^]]>
</PhysicianReadingStudy>
<InstitutionName>
<![CDATA[xyz]]>
</InstitutionName>
<HospitalName>
<![CDATA[Hospital Name]]>
</HospitalName>
<ReportSet>
<MyReport ID="1">
<ReportStatus>
<![CDATA[Done]]>
</ReportStatus>
</MyReport>
<MyReport ID="2">
<ReportStatus>
<![CDATA[Done]]>
</ReportStatus>
</MyReport>
<MyReport ID="3">
<ReportStatus>
<![CDATA[Initial]]>
</ReportStatus>
</MyReport>
</ReportSet>
<ReportImageSet />
<FetusSet />
</TestReport>
</Value>
<WhoSetMe xmlns="Reporting">NotSpecified
</WhoSetMe>
</TextType>
I want to parse the xml above in C# and check whether "ReportStatus" is "Done" for all the ReportStatus under MyReport/ReportSet. One more twist here is the xml contains one more xml starts at "Value" tag as in above example.It may contatin many ReportStatus tag under ReportSet tag. Can someone please help me?
// Can you try this? I tried to do it with LINQ to XML.
// I assume you have multiple <TestReport /> elements in <Value /> tag
// and var xelement is your xml variable
// First we get all TestReport elemnts
IEnumerable<XElement> allReports =
from el in xelement.Elements("TextType/Value/TestReport")
select el;
// From allReports we get all MyReport elemnts
IEnumerable<XElement> allMyReports =
from el in allReports.Elements("ReportSet/MyReport")
select el;
// From allReports we also get all MyReport elemnts with element ReportStatus value equals "Done"
IEnumerable<XElement> allDoneMyReports =
from el in allMyReports
where (string)el.Element("ReportStatus") == "Done"
select el;
// Now we compare allMyReport with allDoneMyReports
if (allMyReports.Count() == allDoneMyReports.Count())
{
//DO Somehing
}
Your XML document is invalid. You need to fix it before trying to parse it. The issue is that a document can only have one top-level element; you have 2 <TextType> and <Providers>.
Most of your elements are the namespace Reporting. You need to use it when referencing the element.
XNamespace ns = "Reporting";
var value = doc.Element("Value" + ns);
Update
Just use the namespace for each element
XNamespace ns = "Reporting";
var value = xelement.Elements("Value" + ns);
Another Update
The XML document is considered invalid because it has multiple XML declarations; there is no way to disable this. I suggest you pre-process the document to remove the extra declarations. Here's an example (https://dotnetfiddle.net/UnuAF6)
var xml = "<?xml version='1.0'?><a> <?xml version='1.0'?><b id='b' /></a>";
var doc = XDocument.Parse(xml.Replace(" <?xml version='1.0'?", " "));
var bs = doc.Descendants("b");
Console.WriteLine("{0} 'b' elements", bs.Count());
I have my XML as
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<recordsDirectory>F:/model_RCCMREC/</recordsDirectory>
<transferDirectory>F:/model_RCCMrecTransfered/</transferDirectory>
<logDirectory>F:/model_RCCMLOG/</logDirectory>
<connectionstring>Data Source=192.168.1.7;Initial Catalog=RCCMdb;User ID=genesys;Password=genesys</connectionstring>
<table>RCCMrec</table>
<DBdestination>
<val1>ANI</val1>
<val2>DNIS</val2>
<val3>Date</val3>
<val4>Time</val4>
<val5>ConnId</val5>
<val6>UUID</val6>
<val7>EmployeeId</val7>
<val8>AgentDN</val8>
</DBdestination>
</configuration>
I need the value of the recordsDirectory tag.
I tried this,
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load("C:/Users/yachna/Desktop/RCCM_TOOL/configRCCM.xml");
string bvalue = xmldoc.SelectSingleNode("recordsDirectory").InnerText.ToString();
But got an error saying
Object reference not set to an instance of an object.
Yes, SelectSingleNode("recordsDirectory") will return null, because you're applying that XPath to the document itself - which doesn't have a recordsDirectory element at the top level, it has a configuration element. You want:
xmldoc.SelectSingleNode("configuration/recordsDirectory")
Or go via the root element:
xmldoc.DocumentElement.SelectSingleNode("recordsDirectory")
(Or you can fetch all descendant elements call recordsDirectory, etc. There are plenty of options here.)
Personally I'd suggest changing to use LINQ to XML if you can, as it's a simpler way of using XML, IMO. It's not too bad in the code you've given so far, but as you do more things with XmlDocument you'll run into it being a bit of a pain - relatively speaking, anyway.
You should also consider separating the "fetching the node" from getting the text, so you can validate that you've found the one you want:
XmlNode node = xmldoc.DocumentElement.SelectSingleNode("recordsDirectory");
if (node != null)
{
// Use it
}
else
{
// No such node. What do you want to do?
}
Try this one in your SelectSingleNode
XmlNode node = doc.SelectSingleNode("/configuration/recordsDirectory");
string s = node.InnerText.ToString();
Hi To read the recordsDirectory tag you need to do :
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load("C:/Users/yachna/Desktop/RCCM_TOOL/configRCCM.xml");
string bvalue = xmldoc.SelectSingleNode("configuration/recordsDirectory").InnerText.ToString();
It will work perfactly
I would like to parse this XML :
<?xml version="1.0" encoding="Windows-1252" ?>
<TEST>Login inexistant</TEST>
I wrote this code
var result = from item in XElement.Parse(m_strRetour).Descendants("TEST")
select item;
return result.First().ToString();
m_strRetour is a string that contains my XML.
After execution, result is empty.
What am I doing wrong?
TEST seems to be your root node, so it can't be a Descendant.
To get the value out of it you could try this.
var xml = "<?xml version='1.0' encoding='Windows-1252' ?><TEST>Login inexistant</TEST>";
var result = XElement.Parse(xml);
var value = result.Value;
XElement.Parse will return the TEST element itself - which doesn't have any descendants. (Also, there's no benefit in using a query expression here. Whenever you write from x in y select x you should consider whether you couldn't just use y instead...)
You could parse it as an XDocument instead, in which case there would be a TEST descendant... or you could just use the XElement itself.
What are you really trying to achieve though? Does your real XML only have a single element?
Below is an example of the xml file that I need to pull data via C#. This is my first experience with reading xml files and a beginner with xml. Anyone have an example of how I would find/load the fieldorder values for Export_B?
<?xml version="1.0" encoding="utf-8"?>
<Config>
<OutFolderCSV>c:\Output\2012\upload_Files</OutFolderCSV>
<OutFolderImage>c:\Output\2012\NM_Scorecard_Images</OutFolderImage>
<PathOutLogFile>c:\Output\2012\Log\Matches.log</PathOutLogFile>
<FieldSeparator>,</FieldSeparator>
<ExportFile>
<Name>Export_A</Name>
<FieldOrder>matchID</FieldOrder>
<FieldOrder>contactID</FieldOrder>
<FieldOrder>stageID13</FieldOrder>
<FieldOrder>stringScore1a</FieldOrder>
<FieldOrder>xScore1a</FieldOrder>
<FieldOrder>stageID14</FieldOrder>
<FieldOrder>stringScore1b</FieldOrder>
<FieldOrder>xScore1b</FieldOrder>
<FieldOrder>stageID15</FieldOrder>
<FieldOrder>stringScore1c</FieldOrder>
<FieldOrder>xScore1c</FieldOrder>
</ExportFile>
<ExportFile>
<Name>Export_B</Name>
<FieldOrder>matchID</FieldOrder>
<FieldOrder>contactID</FieldOrder>
<FieldOrder>stageID16</FieldOrder>
<FieldOrder>stringScore1a</FieldOrder>
<FieldOrder>xScore1a</FieldOrder>
<FieldOrder>stageID17</FieldOrder>
<FieldOrder>stringScore1b</FieldOrder>
<FieldOrder>xScore1b</FieldOrder>
<FieldOrder>stageID18</FieldOrder>
<FieldOrder>stringScore1c</FieldOrder>
<FieldOrder>xScore</FieldOrder>
</ExportFile>
</Config>
Using LINQ to XML:
var doc = XDocument.Load(#"c:\path\to\file.xml");
var fieldOrders =
from exportFile in doc.Descendants("ExportFile")
where (string)exportFile.Element("Name") == "Export_B"
from fieldOrder in exportFile.Elements("FieldOrder")
select (string)fieldOrder;
I have written an article
http://www.codeproject.com/Articles/33769/Basics-of-LINQ-Lamda-Expressions
on XML using XDocument object.
You can parse the XML easily using
XDocument.Load(filepath)
Please read the section XLinq to parse the objects.
edit :
You can change value of Export_B using the code :
var document = XDocument.Load(filepath)
var exportFiles = document.Descandants("ExportFile");
List<XElement> list = new List<XElement>();
foreach(var element in exportFiles)
{
list.Add(element);
// Now you can do element.Element("Name") to get the name. Put a breakpoint on this, you can get the reference of all underlying objects.
}
I want to return the latitude node (for example) from the following XML string (from Yahoo geocoding API.)
<ResultSet version="1.0">
<Error>0</Error>
<ErrorMessage>No error</ErrorMessage>
<Locale>us_US</Locale>
<Quality>60</Quality>
<Found>1</Found>
<Result>
<quality>87</quality>
<latitude>37.68746446</latitude>
<longitude>-79.6469878</longitude>
<offsetlat>30.895931</offsetlat>
<offsetlon>-80.281192</offsetlon>
<radius>500</radius>
<name></name>
<line1>123 Main Street</line1>
<line2>Greenville, SC 29687</line2>
<line3></line3>
<line4>United States</line4>
<house>123</house>
<street>Main Street</street>
<xstreet></xstreet>
<unittype></unittype>
<unit></unit>
<postal>29687</postal>
<neighborhood></neighborhood>
<city>Greenville</city>
<county>Greenville County</county>
<state>South Carolina</state>
<country>United States</country>
<countrycode>US</countrycode>
<statecode>SC</statecode>
<countycode></countycode>
<uzip>29687</uzip>
<hash>asdfsdfas</hash>
<woeid>127757446454</woeid>
<woetype>11</woetype>
</Result>
</ResultSet>
I already have this XML successfully loaded into an XElement instance but I cannot seem to be able to find the way to load the latitude node (for example) into a string variable. If there is no node or the node is empty then I would like to get a Null or Nullstring. If there is more than one (there won't be but just in case) then return the first instance.
I thought this would be easy but I can't get it to work. All of the Linq queries I have tried are returning null.
While I am at it if you could explain it with enough detail so that I can also get the Error node. I only mention it because it is at a different level.
Thanks.
Seth
To get latitude's value:
var latitudeElement = resultXML.Descendants("latitude").FirstOrDefault();
string latitude = latitudeElement == null ? String.Empty : latitudeElement.Value;
And you could get the Error element with the following:
var errorElement = resultXML.Descendants("Error").First();
I'm using resultXML as the reference to the parsed XML.
Make sure you're using the System.Xml.XPath namespace, and try:
var doc = XDocument.Parse(<your xml here>);
var el = doc.XPathSelectElement("ResultSet/Result/latitude");
el should contain an XElement class or null if the node wasn't found.
See the MSDN docs for XPath 1.0 for more info on how to use it.