I have some Xml that I am trying to change the name of the XElement on. The XElement contains both child elements and a value similar to this
<parent>
Hi I am a value link
</parent>
I tried using the method suggested here but i can only copy either the elements or the value. Setting the elements first and then the value wipes out the elements.
<newparent>
Hi I am a value link
</newparent>
Copying the value and then elements duplicates the element text
<newparent>
Hi I am a value link link
</newparent>
String manipulation of the value itself escapes all of the brackets.
<newparent>
Hi I am a value link <a href="link">link</a>
</newparent>
Does someone know of a way to achieve the result of copying the value and elements over to the newly created element correctly?
If I get your question correctly, you want all the child nodes copied to a new parent with a different name. If so, use the Nodes() method.
XElement parent = XElement.Parse("<parent>Hi I am a value link</parent>");
var newparent = new XElement("newparent", parent.Nodes());
Related
I have been trying to deserialize the InnerXML into a class and for some reason the XML keeps changing shape and however many times I try to get the class right it seems to change shape again.
So I have given up and decided to try another method.
Is it possible to retrieve the value of a parameter within the InnerXML manually using c#?
Say for example, my XML innerXML looked like this:
<Timestamp>2014-08-22T21:45:00Z</Timestamp>
<Subscriber>https://www.dogdoza.co.uk</Subscriber>
<Order>
<OrderID>111867</OrderID>
<InvoiceNumber>DOZA-9725410</InvoiceNumber>
<CustomerID>4542</CustomerID>
Is it possible to pull out say the value of Subscriber
If this is possible I can just pull out the values I want manually. Not ideal, but there are only about 10...
I have looked around but not managed to find any code I can get working..
Can anyone please give me any guidance?
Thanks
You can do achieve what you want using LINQ to XML:
XElement myXml = XElement.Load(#"XmlLocationHere");
XElement subscriber = myXml.Descendants("Subscriber").FirstOrDefault();
XElement.Descendants returns a collection of the descendant elements for this document or element, in document order. This method will return an IEnumerable<XElement>, since there might be more than one "Subscriber" element, but in your case, we choose FirstOrDefault, which returns the first occurrence.
Try loading your XML into an XDocument. Then try to use XPathSelectElement to find the specific value you want.
It could be that you need to wrap your inner xml into a root element, because it doesn't accept multiple roots.
Pseudo example:
// set up your xml document
string xml = "<rootelement>" + myInnerXml + "</rootelement>";
XDocument doc = new XDocument();
doc.Parse(xml);
XElement subscriber = doc.XPathSelectElement("/rootelement/Subscriber");
string value = subscriber.Value;
Variations of this question have already been asked but I have not found one that can help me with the problem i am having.
Given and XML file of this format:
<TopLevel>
<SecondLevel Name="Name" Color="Blue">
<ChildNode1></ChildNode1>
<ChildNode2></ChildNode2>
</SecondLevel>
<SecondLevel Name="Name2" Color="Red">
...
</SecondLevel>
</topLevel>
I have the value to the attribute Color.
What I would like is to be able to first find the Name corresponding to that color, and then find all the childnodes.
I prefer to use Xelement over XDocument.
This is what I have attempted so far, but with no luck.
XElement xelement = XElement.Load("XmlFile.xml");
IEnumerable<XElement> Name2=
from el in xelement.Elements("SecondLevel")
where el.Attribute("Color") == "Red"
select el;
With the result of that, I will eventually want to format it into a datatable. Is this doable?
You just missing cast of attribute to string (or getting it's value directly - see notes at the end). Also you can select Name attribute value to have sequence of strings instead of XElements:
XElement xelement = XElement.Load("XmlFile.xml");
IEnumerable<string> names =
from el in xelement.Elements("SecondLevel")
where (string)el.Attribute("Color") == "Red" // here
select (string)el.Attribute("Name");
NOTE: You can also access attribute value directly with el.Attribute("Color").Value but that will throw exception if element don't have Color attribute. So casting is more safe, but accessing value can be option if you want your code to fail fast if xml is not valid.
BTW you can also use XPath to get second level elements which have required color:
IEnumerable<XElement> secondLevels =
xelement.XPathSelectElements("SecondLevel[#Color='Red']");
I have a XML structured like this:
<airports>
<airport code="code">
Airport name
<location>Airport location</location>
</airport>
...
</airports>
And I am trying to parse its code and name:
List<string> list = new List<string>();
XmlDocument xDoc = new XmlDocument();
xDoc.Load("file.xml");
foreach (XmlNode node in xDoc.GetElementsByTagName("airport"))
{
list.Add(node.Attributes["code"] + " " + node.Value);
}
But instead of the value I am not getting anything. When debugging, it says, the value of the node in null. Yet, I can see the text in .InnerText. Can you tell me, where is the problem and how can I get the value?
Try replacing node.Value with node.FirstChild.Value.
That should return something like:
"\r\n Airport name\r\n "
Well you could have probably just used innertext, but as Grant Winney alluded to the "value" of the airport node is a child node of type (text) of the airport node.
It seems strange but it was a way of dealing with xml like this
<NodeA>Fred<NodeB>Bloggs</NodeB></NodeA>
ie NodeA has two children, one of type text and another of type elements. Other node types also fit in nicely.
What Grant Winney said will solve your issue. But is there any reason why you're not using LINQ 2 XML instead of XmlDocument?
You can achieve what you're doing very quickly and easily with minimal code:
XDocument.Load("file.xml")
.Root
.Elements("airport")
.Select (s => s.Attribute("code").Value + " " + s.FirstNode)
.ToList<string>();
Ideally though, if you have the opportunity, you should put 'airport name' into it's own element inside <airport>. Like this:
<airports>
<airport code="code">
<name>Airport name</name>
<location>Airport location</location>
</airport>
...
</airports>
The issue is that an XmlElement, which is a specialization of XmlNode where NodeType is Element, has no "value" and thus always returns null.
It has Attributes, and it has Child nodes. XmlElement.InnerText works because it recursively builds the result from the Children and grandchildren, etc (some of which are Text nodes).
Remember that text sections in XML are really just Nodes themselves.
Ideally, the XML would be fixed such that the name was an attribute (or even the sole [Text] node in an element).
I am trying to get all the elements in a selected "Xpath location" and add them to a comboBox/ drop down list.
I tried to select all these elements by using the Xpath query : /#* with the Select method from the XpathNodeIterator.
The problem is that it return an iterator which does not move forward, in fact, it says it has no childs and its not allowing me to convert the iterator neither to an xmlElement or node so that I could at least search inside them.
This is the code :
while (anIterator.MoveNext())
{
//im trying to select all nodes of selected path which and return them to an iterator
secondIterator = anIterator.Current.Select("/#*");
while (secondIterator.MoveNext())
{
aNode = new Nodes();
aNode.Name = anIterator.Current.MoveToFirstChild().ToString();
nodeList.Add(aNode);
}
nodeList.Add(aNode);
}
Any solution to get all the elements in the current node ?
This is definitely harder to answer without the XML file you're working with, and without you telling us what you're hoping to see, and what you're currently seeing.
Here are some observations:
The '#' character in your XPath suggests you're trying to get all of the attributes of the current Node. The '/' tells Path to start at the root of the DOM.
If you're trying to get all the elements under the current node, you might want to change to "./*"
The issue is the #, which indicates that you want to select the child attributes, not child elements. (See http://www.w3.org/TR/xpath/#path-abbrev).
Try anIterator.Current.Select("*") to get the child elements. If you want all descendant elements (not just immediate children), try anIterator.Current.Select(".//*")
<Document>
<Heading1>
<text>Heading Title</text>
<para>para1</para>
<para>para2</para>
<para>para3</para>
</Heading1>
<Heading1>
<text>2nd Heading Title</text>
<para>para4</para>
<para>para5</para>
<para>para6</para>
<Heading2>
<text>3rd Heading Title</text>
<para>para4</para>
<para>para5</para>
</Heading2>
</Heading1>
</Document>
This is XML Document. Now, i want to parse this XML file using C# (4.0). Here, I want to get all the Heading1 elements without using that element name in my program. For example, don't use document.GetElementsByTagName("Heading1");. How i get it. Guide me get out of this issue.
Thanks & Regards.
Using LINQ to XML, you can do:
var headings = yourXDocument.Root.Elements();
Using Nodes() instead of Elements() will also return text nodes and comments, which is apparently not what you want.
You can access the child elements of the document or element through the Elements() method if using LINQ to XML.
XDocument doc = ...;
var query = doc.Root.Elements();
If you're using XmlDocument, this works:
var elements = doc.SelectNodes("/*/*");
That finds all child elements of the top-level element irrespective of any of their names. It's usually safer to specify the names if you know them, so that elements with unexpected names don't get returned in your list - use /Document/Heading1 to do this.