I have this XML File and want write all values with MGU tags that are under the < Norm > with attribute Name="TL 52146" to a list:
<?xml version="1.0" encoding="utf-8"?>
<Normen>
<Norm Name="TL 52146">
<MGU>PV 1401</MGU>
<MGU>PV 1425</MGU>
<MGU>PV 1448</MGU>
</Norm>
</Normen>
The expected result would be:
PV 1401
PV 1425
PV 1448
When I use this code I just get one list element with all MGUs in it but I want every MGU to be a seperate entry in my list:
XDocument doc = XDocument.Load("data/data.xml");
var ChildsOfNorm = from element in doc.Descendants("Norm")
where element.Attribute("Name").Value == "TL 52146"
select element;
Can someone please help me?
I'd change the code to the following:
var ChildsOfNorm = doc
.Descendants("Norm")
.Where(e => e.Attribute("Name").Value == "TL 52146")
.Elements();
If you only want to get the MGU elements, change the Elements() call to Elements("MGU").
This should get all wanted elements.
With the given xml
foreach (var v in ChildsOfNorm)
Console.WriteLine(v.Value);
outputs:
PV 1401
PV 1425
PV 1448
Related
I searched a long time in order to get an answer but as i can see is not working.
I have an XML File and I would like to read a specific element from a node.
For example, this is the XML:
<Root>
<TV>
<ID>2</ID>
<Company>Samsung</Company>
<Series>13523dffvc</Series>
<Dimesions>108</Dimesions>
<Type>LED</Type>
<SmartTV>Yes</SmartTV>
<OS>WebOS</OS>
<Price>1993</Price>
</TV>
</Root>
I want to get the ID element in the code as a variable so i can increment it for the next item which i will add.
This is the code at this moment, but i can not find a way to select something from the item itself.
XDocument doc = XDocument.Load("C:TVList.XML");
XElement TV = doc.Root;
var lastElement = TV.Elements("TV").Last()
A query for the last TV's id (this will return 0 if there are no elements):
var lastId = (int) doc.Descendants("TV")
.Elements("ID")
.LastOrDefault();
You might also want the highest id (in case they're not in order):
var maxId = doc.Descendants("TV")
.Select(x => (int)x.Element("ID"))
.DefaultIfEmpty(0)
.Max();
See this fiddle for a working demo.
Use like this to get id value
XDocument doc = XDocument.Load(#"C:\TVList.XML");
XElement root = doc.Element("Root");
XElement tv = root.Element("TV");
XElement id = tv.Element("ID");
string idvalue = id.Value;
also make your <Type>LED</Tip> tag of xml to <Type>LED</Type> for match
I'm trying to use the Bing maps API, which returns an XML document. The document (simplified but keeping structure) is
<Response xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://schemas.microsoft.com/search/local/ws/rest/v1">
<StatusCode>
200
</StatusCode>
<ResourceSets>
<ResourceSet>
<Resources>
<TrafficIncident>
<Severity>
Minor
</Severity>
<RoadClosed>
false
</RoadClosed>
</TrafficIncident>
</Resources>
</ResourceSet>
</ResourceSets>
</Response>
In this case, there is only 1 traffic issue but there could be many.
I'm trying to extract if the road is closed and the severity
The XML is stored in a xd object (of type XDocuement)
The following works fine (no error but returns all the elements)
var allNodes = (from x in xd.Descendants()
select x).ToList();
but if I add an element name then it returns a list with 0 items
var allNodes = (from x in xd.Descendants("Resources")
select x).ToList();
I thought the above code is saying:
from xd, grab all of the descendants of the "Resources" element
If my understanding is correct, why does it return 0 results
You must include your (default) XML namespace like so:
var name = XName.Get("Resources", "http://schemas.microsoft.com/search/local/ws/rest/v1");
var allNodes = (from x in xd.Descendants(name)
select x).ToList();
You must not forget the XML Namespace.
XNamespace search = "http://schemas.microsoft.com/search/local/ws/rest/v1";
var allNodes = (from x in xd.Descendants(search + "Resources")
select x).ToList();
Hi I have the following XML:
<EPICORTLOG>
<POS>
<ClientId>WkStn.90.1</ClientId>
<Id>POS.90.20140819.251.8279</Id>
<StartTime>2014-08-25T05:12:34</StartTime>
<Store>90</Store>
<SysDate>2014-08-19T00:00:00</SysDate>
<TillNo>1</TillNo>
<Time>2014-08-25T05:12:34</Time>
<Tran>1093</Tran>
<WkStn>1</WkStn>
<WORKSTATION>
<IsAutoLock>1</IsAutoLock>
</WORKSTATION>
<TRADE>
<ITEM>
<Class>102499</Class>
<Desc>NIKE RACER</Desc>
<FinalPrice>82.77</FinalPrice>
<Status>ACTV</Status>
<Style>EV0615</Style>
<Tag>1</Tag>
</ITEM>
</TRADE>
</POS>
</EPICORTLOG>
There are many POS nodes like above in the actual XML. I am trying to fetch the POS node with ID=POS.90.20140819.251.8279 and then the details of Item from that particular node. I have written the following query:
XDocument xdoc = XDocument.Load(XMLFile);
var item = from items in xdoc.Element("EPICORTLOG").Descendants("POS")
where items.Attribute("Id").Value == strSelectedPOSID
select new
{
desc=items.Element("ITEM").Attribute("Desc")
};
But it is not yielding any result for me. Here strSelectedPOSID=POS.90.20140819.251.8279. Please let me know where i am going wrong.
Id and Desc are not an Attributes. they are Elements so you should use
var item = from items in xdoc.Descendants("POS")
where (string)items.Element("Id") == strSelectedPOSID
select new
{
desc = (string)items.Element("ITEM").Element("Desc")
};
I got the value at last!! Following is what i used:
var item = from items in xdoc.Element("EPICORTLOG").Descendants("POS")
where (string)items.Element("Id") == strSelectedPOSID
select new
{
desc = items.Element("TRADE").Element("ITEM").Element("Desc").Value.ToString()
};
Thanks for the inputs.
Still a Linq newbie here, and now having issues with the WHERE clause. I'm trying to return anything found in the printer tags, but only from below the element list type="lff".
If I try to output the descendant elements with no WHERE clause, I get everything (from both <list> elements). When I try to add various versions of a WHERE clause, I get nothing back. I'm obviously not putting the WHERE condition in correctly.
(I need to get the element object, so I can check the NAME and the VALUE. In my example below, I am only outputting the VALUE for now).
Can you advise?
Here is the XML:
<?xml version="1.0"?>
<printerlist>
<list type="aff">
<printserver>print-server1</printserver>
<printserver>print-server2</printserver>
<printserver>print-server3</printserver>
<additionalprinters>
<printer>
<fullname>\\servera\bbb</fullname>
</printer>
</additionalprinters>
</list>
<list type="lff">
<printserver>print-sever4</printserver>
<additionalprinters>
<printer>
<fullname>\\serverb\bbb</fullname>
</printer>
<printer>
<fullname>\\serverc\aaa</fullname>
</printer>
</additionalprinters>
</list>
</printerlist>
And here is the code to try and get the list:
var qq = from c in xml.Descendants("additionalprinters").Descendants("printer")
//where (string) c.Parent.Attribute("type") == "lff"
//Uncommenting the above line means that nothing is returned.
select c;
foreach (XElement q in qq)
{
Console.WriteLine("Test Output: {0}", q.Value );
}
Output is:
Test Output: \\servera\bbb
Test Output: \\serverb\bbb
Test Output: \\serverc\aaa
I am only looking for the final two outputs to be returned, in this particular case.
The parent of printer is additionalprinters and it doesn't have type property, you need to use .Parent twice to get list element.
from c in xml.Descendants("additionalprinters").Descendants("printer")
where (string) c.Parent.Parent.Attribute("type") == "lff"
select c
Or you can also do the following
xml.Descendants("list")
.Where(c => (string) c.Attribute("type") == "lff")
.SelectMany(x => x.Element("additionalprinters").Descendants("printer"))
You can also use XPath selector from System.Xml.XPath namespace for this purpose:
var doc = XDocument.Parse(xml);
var printers = doc.XPathSelectElements("//list[#type='lff']/additionalprinters/printer");
I have the following XDocument called XDoc:
<?xml version="1.0" encoding="utf-8"?>
<DatabaseList>
<Database DatabaseName="c2501_data">
<Plugin PluginName="FooPlugin" LastRun="1/21/2013 3:22:08 PM" />
<Plugin PluginName="SpecialPlugin" LastRun="2013-01-21T15:22:09.3791103-05:00" />
<Plugin PluginName="BarPlugin" LastRun="2013-01-21T15:23:13.0964814-05:00" />
</Database>
</DatabaseList>
I'm writing a program that searches to see when the last time a plugin was run on a database, if at all. I use the following two pieces of code to figure out if an entry exists for a plugin on a database:
var h = (from el in XDoc.Root.Elements("Database")
where el.Element("Plugin").Attribute("PluginName").Value=="FooPlugin"
&& el.Attribute("DatabaseName").Value=="c2501_data"
select el.Element("Plugin"));
var e = (from el in XDoc.Root.Elements("Database")
where el.Element("Plugin").Attribute("PluginName").Value=="BarPlugin"
&& el.Attribute("DatabaseName").Value == "c2501_data"
select el.Element("Plugin"));
if ((from el in XDoc.Root.Elements("Database")
where el.Element("Plugin").Attribute("PluginName").Value == "BarPlugin"
&& el.Attribute("DatabaseName").Value == "c2501_data"
select el.Element("Plugin")).Count() == 0)
{
XElement SpecialPlugin = new XElement("Plugin",
new XAttribute("PluginName", "BarPlugin"),
new XAttribute("LastRun", DateTime.Now));
var CurNode = from node in XDoc.Root.Elements("Database")
where (string)node.Attribute("DatabaseName").Value == "c2501_data"
select node;
foreach (var node in CurNode)
node.Add(SpecialPlugin);
XDoc.Save(RuntimesPath);
//XDoc.Root.Elements("Database").Attribute("DatabaseName").
}
The problem that I'm having is that even though there is clearly an entry for BarPlugin, the count will always return 0 and e will always be unable to create an enumberable. Can anyone explain to me why this might be? FooPlugin always works correctly and returns the Plugin information for h.
Thanks for any help.
You're selecting a Database element where it contains a child element called Plugin with a given name. Since you have only one Database element, you're getting the same outer element each time. You then take that database element and return the first Plugin child, which will always be Foo, in this case. You need to find the appropriate Database element and then query through each of the child elements so you can return them:
public static XElement GetPlugin(XDocument XDoc, string databaseName, string pluginName)
{
var h = from database in XDoc.Root.Elements("Database")
where database.Attribute("DatabaseName").Value == databaseName
from plugin in database.Elements("Plugin")
where plugin.Attribute("PluginName").Value == pluginName
select plugin;
return h.FirstOrDefault();
}
Or, if you prefer, in method syntax:
var q = XDoc.Root.Elements("Database")
.Where(db => db.Attribute("DatabaseName").Value == databaseName)
.SelectMany(db => db.Elements("Plugin"))
.Where(plugin => plugin.Attribute("PluginName").Value == pluginName);
return q.FirstOrDefault();
Try this:
var db = XDoc.Root.Elements("Database");
var z = (from el in db.Elements("Plugin")
where el.Attribute("PluginName").Value == "BarPlugin"
&& el.Parent.Attribute("DatabaseName").Value == "c2501_data"
select el).FirstOrDefault();
if(z != null)
.....
I'm using Elements() method, to get all child elements and Parent property to look for the parent element "DatabaseName".
Problem in your code is that your el.Element() is searching only for the first element, thus it can find only "FooPlugin", which is on the first position in the xml.
From MSDN doc Element():
Gets the first (in document order) child element with the specified XName.