Develop Reference

How to get value of an XML node?

For the life of me I have not been able to extract the SourcePartyName from this XML document:
<ns0:Visit xmlns:ns0="http://Co.Burgers.Ues">
<ns0:SourcePartyName>NDHARY</ns0:SourcePartyName>
</ns0:Visit>
Using Scott's solution, I've been able to extract the namespace info; however, after dozens of attempts at monkeying with XDocument / XElement, I have not been able to get the desired NDHARY value.
Attempts have included:
xdoc.Descendants(ns + "SourcePartyName").FirstOrDefault()?.Value;
and
xdoc.Element(ns + "SourcePartyName").Value;
How do you get the value of a node from an XDocument?

When using an XDocument you have to go via its Root property.
String xml = #"
<ns0:Visit xmlns:ns0=""http://Co.Burgers.Ues"">
<ns0:SourcePartyName>NDHARY</ns0:SourcePartyName>
</ns0:Visit>
";
XDocument xdoc = XDocument.Parse(xml);
XNamespace ns = "http://Co.Burgers.Ues";
String sourcePartyName = (String)xdoc.Root.Element(ns + "SourcePartyName");

Extracting data from the properties of an xml file

I am attempting to extract data from an xml file generated from a save function. Here is what the xml looks like when the data has been serialized
<Data>
<ParentID>00000000-0000-0000-0000-000000000000</ParentID>
<Content><ContentControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"> <Grid><Image Source=".//Resources/Images/start.png" Tag="Start" ToolTip="Start" IsHitTestVisible="False" /></Grid></ContentControl> </Content>
</Data>
I can read the data between the <> signs using an XElement object and extract it value using Element("Child").Value for example the ParentID but I do not know how to extract the property data from within Content tags such as the programmatic reading the Tag property of the Image, in this case Tag='Start'.
Can someone please assist me to resolve this matter

If the problem you are running into is that the data in the Content node is a malformed fragment, then this is a way to extract that, fix the malformation and get at the data.
string asReadXml = #"<Data>
<ParentID>00000000-0000-0000-0000-000000000000</ParentID>
<Content><ContentControl xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""> <Grid><Image Source="".//Resources/Images/start.png"" Tag=""Start"" ToolTip=""Start"" IsHitTestVisible=""False"" /></Grid></ContentControl> </Content>
</Data>";
var fragment = Regex.Match(asReadXml, #"(?:\<Content\>)(?<Xml>.+)(?:\</Content\>)", RegexOptions.ExplicitCapture).Groups["Xml"].Value;
var validFragment = Regex.Replace(Regex.Replace(fragment, "(<)", "<"), "(>)", ">");
var xDoc = XDocument.Parse("<Root>" + validFragment + "</Root>");
/* XDoc looks like this:
<Root>
<ContentControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<Grid>
<Image Source=".//Resources/Images/start.png" Tag="Start" ToolTip="Start" IsHitTestVisible="False" />
</Grid>
</ContentControl>
</Root>
*/
var Image =
xDoc.Root
.Descendants()
.Where (p => p.Name.LocalName == "Image")
.First ();
Console.WriteLine ( Image.Attribute("Tag").Value );
// Outputs
// Start

var data = #"<Data>" +
"<ParentID>00000000-0000-0000-0000-000000000000</ParentID>" +
"<Content><ContentControl xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">"+
"<Grid><Image Source=\".//Resources/Images/start.png\" Tag=\"Start\" ToolTip=\"Start\" IsHitTestVisible=\"False\" /></Grid></ContentControl>" +
"</Content>" +
"</Data>";
var root = XElement.Parse(data);
var contentValue = root.Element("Content").Value;
var contentXml = XElement.Parse(contentValue);
var ns = contentXml.Name.Namespace; // retrieve the namespace
var imageTagValue = contentXml.Element(ns+"Grid").Element(ns+"Image").Attribute("Tag").Value; //

Assume that element is an XElement object that represent <Content> element (You already have a way to get it though), you can do as follow to get Tag attribute value of Image element :
XElement element = ....;
var content = XElement.Parse((string)element);
var ns = content.Name.Namespace;
var image = content.Descendants(ns + "Image").FirstOrDefault();
var tag = "";
if(image != null)
{
tag = (string)image.Attribute("Tag");
}
We check if image is null before looking for it's attribute. With that, you won't get exception if there any <Content> element that doesn't have <Image> element). tag variable will simply contains empty string in that case.
This also handle case when <Content> has <Image> element resides in different path (not under <Grid> element).

Personally, I would recommend getting the whole content as a string, and then parse it as a html data using http://htmlagilitypack.codeplex.com/ library. That way you'll offload all the parsing to specialized libraries.

How to get a specific XML value from an XML using C#?

I have the below XML as:
<Requests xmlResponse="true">
<Request response="yes" responsewait="120000" sequence="1" type="Fulfillment">
<RequestData>
<PrintControl>FTP</PrintControl>
<User>81DF</User>
<Documents>
<AddressChangeLetter>
<DocumentInfo>
<AddressChange AddressChangeId="109346" Branch="418" LastChangeDate="">
<Name>AAA NOVAK</Name>
<TaxID>123123121</TaxID>
<OldAddress1>BOX 216</OldAddress1>
<OldAddress2>NYANE 68017</OldAddress2>
<OldAddress3 />
<OldAddress4 />
<NewAddress1>P O BOX 216</NewAddress1>
<NewAddress2>CERESCO NE 68017</NewAddress2>
<NewAddress3 />
<NewAddress4 />
<DateChanged>05/08/2013</DateChanged>
<AccountInfo AcctNum="231232311" AcctStatusCodes="IX" />
</AddressChange>
</DocumentInfo>
</AddressChangeLetter>
</Documents>
</RequestData>
I wanted to get the name or the value which is under the tag "Documents". Since in the above XML, the tag under the "Document" tag is "AddressChangeLetter", therefore, I want to get this name. How will I do it.

Something along the lines of... (it's not perfect, but it'll get you started - Google the functions I've used to get it working properly):
XmlDocument xml = new XmlDocument();
xml.Load(yourPathGoesHere)
XmlNodeList addressNodes = xml.GetElementsByTagName("AddressChange");
foreach (XmlNode oneNode in addressNodes) {
myVariableToGrabNames = oneNode["Name"].InnerText;
}

This can be done pretty easily using Linq to XML e.g.
var xml = ...;
var xdoc = XDocument.Parse(xml);
foreach (var e in xdoc.Descendants("Documents").Elements())
{
var name = e.Name; // AddressChangeLetter
}

extracting theNamespace from the xml file

I am working on the XML files in C#.
I want to extact the name space and do some maniplations.
say my xml file looks like this.
<Content xmlns="http://ABCD.com/sdltridion/schemas/XXXXX">
<first>ABCD</first>
<second>DCEF</second>
</Content>
I want to extract Xml namespace from the root tag, ang get the value of XXXXX.
Output needed: XXXXX
Can any one help regarding this.
Thank you.

Try this:
var xdoc = XDocument.Parse(xml);
var ns = xdoc.Root.Name.Namespace.NamespaceName;
var value = new Uri(ns).Segments.LastOrDefault();

You can try XNamespace class
XNamespace ns = XNamespace.Get("http://ABCD.com/sdltridion/schemas/XXXXX");
var result = XElement.Load("URL").Descendants(ns + "NODENAME");
Thanks
Deepu

LINQ To XML Getting a value without the nodes inside

I have this XML:
<chunk type="manufacturer_info" id="" note="">test: <chunk type="style" style="link">${manufacturer_website}</chunk></chunk>
I need to get "test: " separately from the inner element.
EDIT:
This is coming into a function as an XElement.

The <chunk> element has two child nodes: a text node and a <chunk> element.
You can get the value of the text node as follows:
var element = XElement.Parse(#"<chunk type=""manufacturer_info"" ...");
var result = string.Concat(element.Nodes().OfType<XText>());
// result == "test: "

Here you go.
string xml = #"<Chunks><chunk type='manufacturer_info' id='' note=''>test: <chunk type='style' style='link'>${manufacturer_website}</chunk></chunk></Chunks>";
var xDoc = XDocument.Parse(xml);
var res = xDoc.DescendantNodes().OfType<XText>().First().Value;