I really need help. I have an xml file with the following structure
<?xml version="1.0" encoding="UTF-8"?>
<Head xmlns="http://www.sample-package.org">
<Number>748</Number>
<Number_confirm>977</Number_confirm>
<Positions>
<Tare_id>2442</Tare_id>
</Positions>
<Positions>
<Product_id>168813</Product_id>
</Positions>
</Head>
I need add a key and value to the dictionary (N and "Number"), (id and Product_id), but need do this without a linq, like:
//load xml from url
doc.Load(temp);
var root = doc.GetElementsByTagName("Head");
var documents = new List<Dictionary<string, object>>();
for (int i = 0; i <root.Count; i++)
{
for (int j = 0; j < root[i].ChildNodes.Count; j++)
{
var element = root[i].ChildNodes[j];
InfoManager.MessageBox("element:{0}", element.Value);
var document = new Dictionary<string, object>();
document.Add("N", element.Attributes.GetNamedItem("Number"));
document.Add("NC", element.Attributes.GetNamedItem("Number_confirm"));
documents.Add("ID",
element.Attributes.GetNamedItem("Product_id"));
documents.Add(document);
}
}
Now element.Attributes = null, MessageBox shows element empty, i cant see Attributes/Element and does not add all the elements to the dictionary. How can I fix it??
1) The element does not have any value. To get the numbers you are looking for, you will have to use element.InnerText as in:
MessageBox.Show(string.Format("element:{0}", element.InnerText));
2) Then in the document.Add-Statements, you are trying to access the Attributes, but there are no Attributes on your elements.
An example for an attribute would be:
<Number MyAttribute="additionalInfo">67</Number>
3) You have a typo in one of your document.Add-Statements. You accidently typed documents once.
4) In your second loop you loop through all the elements in the root (Head). So you enter the loop 4 times and each time you got a different element, but you try to add all the values in each iteration. You want to actually have a List of KeyValuePairs like the in following:
var root = doc.GetElementsByTagName("Head");
var documents = new List<KeyValuePair<string, object>>();
for (int i = 0; i < root.Count; i++)
{
for (int j = 0; j < root[i].ChildNodes.Count; j++)
{
var element = root[i].ChildNodes[j];
MessageBox.Show(string.Format("element:{0}", element.InnerText));
var document = new KeyValuePair<string, object>(element.Name, element.InnerText);
documents.Add(document);
}
}
Now the dictionary equals to the structure your xml has: An object (Head) has a List of KeyValuePairs ("Number" pairs with "748", "Number_confirm" pairs with "977", etc.)
As your comment suggests, if your xml could look as follow:
<?xml version="1.0" encoding="UTF-8"?>
<Head xmlns="http://www.sample-package.org">
<Number>748</Number>
<Number_confirm>977</Number_confirm>
<Positions> <!-- Note: two numbers in one Positions-element -->
<Tare_id>2442</Tare_id>
<Product_id>168813</Product_id>
</Positions>
</Head>
..then you will have to add another loop to go deeper and change the following:
..
var element = root[i].ChildNodes[j];
MessageBox.Show(string.Format("element:{0}", element.InnerText));
string numbers = string.Empty;
for(int z = 0; z < element.ChildNodes.Count; z++)
{
numbers += element.ChildNodes[z].InnerText + Environment.NewLine;
}
var document = new KeyValuePair<string, object>(element.Name, numbers);
documents.Add(document);
..
Alltough I recommend, that you create a class with the properties like in the xml so you can load the xml internal and print/alter it at your will.
Try to use XmlDocument and convert it into JSON object.
XmlDocument doc = new XmlDocument();
doc.Load(*XML FILE PATH*);
string XML_JSON = JsonConvert.SerializeXmlNode(doc);
dynamic jsonObject = JsonConvert.DeserializeObject(XML_JSON);
var XML_OBJECT = jsonObject["Head"];
JToken number = (JToken) XML_OBJECT["Number"]
JToken numberConfirm = (JToken) XML_OBJECT["Number_confirm"];
JArray positions = (JArray) XML_OBJECT["Positions"];
Then Iterate it the way you wanted to be added in your dictionary.
FYI It doesn't have any attributes in your XML file.
The Xml document you provide has <Head> as the root element, so the foreach loop will always iterate over exactly one element, as well as the list of dictionaries.
But probably that was just a short example. To get what you desire, you can find the elements you want using XPath like this:
doc.Load(temp);
XmlNamespaceManager nsMgr = new XmlNamespaceManager(doc.NameTable);
nsMgr.AddNamespace("pkg", "http://www.sample-package.org");
var root = doc.GetElementsByTagName("Head");
var documents = new List<Dictionary<string, object>>();
for (int i = 0; i < root.Count; i++)
{
var head = root[i];
var document = new Dictionary<string, object>();
document.Add("N", head.SelectSingleNode("/pkg:Head/pkg:Number", nsMgr).InnerText);
document.Add("NC", head.SelectSingleNode("/pkg:Head/pkg:Number_confirm", nsMgr).InnerText);
document.Add("ID", head.SelectSingleNode("/pkg:Head/pkg:Positions/pkg:Product_id", nsMgr).InnerText);
documents.Add(document);
}
Related
I'm reading in tags and values from an XML file for information that is needed for a functional test software. When adding the Frequencies to the list, the frequencies for all other existing list items are overwritten by the new frequencies.
public struct Configuration
{
public string Description;
public byte Mode;
public byte Deviation;
public string PartNumber;
public UInt16[] Frequencies;
public byte TxPower;
public byte PWM;
public Int16 HeaterSetpoint;
public string FirmwareVersion;
public bool Active;
public int Threshold;
} // struct Configuration
Configurations = new List<Configuration>();
ushort[] Frequencies = new ushort [7];
Configuration TestConfig = new Configuration();
/*Open the XML file, load all the tag values into XmlNodeList */
//Pull in all the XML Tag Values Sorted by Tag Name
XmlNodeList xml_description = ConfigFile.GetElementsByTagName("description");
XmlNodeList xml_mode = ConfigFile.GetElementsByTagName("mode");
XmlNodeList xml_deviation = ConfigFile.GetElementsByTagName("deviation");
XmlNodeList xml_partnumber = ConfigFile.GetElementsByTagName("partnumber");
XmlNodeList xml_channel0 = ConfigFile.GetElementsByTagName("channel0");
XmlNodeList xml_channel1 = ConfigFile.GetElementsByTagName("channel1");
XmlNodeList xml_channel2 = ConfigFile.GetElementsByTagName("channel2");
XmlNodeList xml_channel3 = ConfigFile.GetElementsByTagName("channel3");
XmlNodeList xml_channel4 = ConfigFile.GetElementsByTagName("channel4");
XmlNodeList xml_channel5 = ConfigFile.GetElementsByTagName("channel5");
XmlNodeList xml_channel6 = ConfigFile.GetElementsByTagName("channel6");
XmlNodeList xml_txpower = ConfigFile.GetElementsByTagName("txpower");
XmlNodeList xml_pwm = ConfigFile.GetElementsByTagName("pwm");
XmlNodeList xml_hsp = ConfigFile.GetElementsByTagName("hsp");
XmlNodeList xml_firmware = ConfigFile.GetElementsByTagName("firmware");
XmlNodeList xml_active = ConfigFile.GetElementsByTagName("active");
XmlNodeList xml_threshold = ConfigFile.GetElementsByTagName("threshold");
/*Use LINQ to check that the XmlNodeLists are all the same length. This way we don't try and load invalid data*/
if(!listsaresamelength)
{
/*Alert user there is a problem with the XML file and close the application*/
}
//Loop to add values to the List
for(i = 0; i < NumberofXmlValues; i++)
{
/*check that the description, Mode, Deviation are valid and add them to DummyConfig*/
try
{
Frequencies[0] = UInt16.Parse(xml_channel0[i].InnerText);
Frequencies[1] = UInt16.Parse(xml_channel1[i].InnerText);
Frequencies[2] = UInt16.Parse(xml_channel2[i].InnerText);
Frequencies[3] = UInt16.Parse(xml_channel3[i].InnerText);
Frequencies[4] = UInt16.Parse(xml_channel4[i].InnerText);
Frequencies[5] = UInt16.Parse(xml_channel5[i].InnerText);
Frequencies[6] = UInt16.Parse(xml_channel6[i].InnerText);
//Move the frequencies to the list
TestConfig.Frequencies = Frequencies;
}
catch
{
/*Problem with the XML file. Alert the user and close the application*/
}
/*check that the heater set point, PWM set point, partnumber, Txpower, and Threshold are valid and add them to DummyConfig*/
Configurations.Add(TestConfig)
}
The first iteration of the for loop works fine; here's the result:
first loop iteration
second loop iteration
I've tried a few different ways to change how I'm writing to the list, but they all generate the same result. I feel like I'm missing something obvious.
You need to move your TestConfig and Frequencies variables' instantiation into the for loop so that you're working with a different object each time.
for(i = 0; i < NumberofXmlValues; i++)
{
TestConfig = new Configuration();
Frequencies = new ushort [7];
I'd personally recommend making these locally-declared variables rather than persistent fields. That pattern will help you avoid mistakes like this in the future.
for(i = 0; i < NumberofXmlValues; i++)
{
/*check that the description, Mode, Deviation are valid*/
...
try
{
var testConfig = new Config
{
Description = description
...
Frequencies = new [] {xml_channel0, xml_channel1, ...}
.Select(c => UInt16.Parse(c[i].InnerText))
.ToArray()
};
Configurations.Add(testConfig);
}
...
I read an XML file by following two techniques.
By reading the entire XML using Parse XElement XElement.Parse(File.ReadAllText(xmlfile))
Note: I know I shouldn't have used this technique.
By using Load of XDocument XDocument.Load(xmlfile);
Then I tried creating a list of XElement by the following code snippet. To me, results look same but when I try to compare the two IEnumerable object, they aren't same.
What I am overlooking. Here is the code snippet
// Read the xml db file.
XElement xEle = XElement.Parse(File.ReadAllText(xmlfile));
XDocument xDoc = XDocument.Load(xmlfile);
List<XElement> xElementCollection = xEle.Elements("Map").ToList();
List<XElement> xDocumentCollection = xDoc.Descendants("Map").ToList();
bool bCompare = xElementCollection.Equals(xDocumentCollection);
bCompare results to false, however when I look at the data to both the lists. They look same.
You basically need to go through each element in both lists and compare them to each other by value using the XNode.DeepEquals method.
if (xElementCollection.Count != xDocumentCollection.Count)
{
bCompare = false;
}
else
{
bCompare = true;
for (int x = 0, y = 0;
x < xElementCollection.Count && y < xDocumentCollection.Count; x++, y++)
{
if (!XNode.DeepEquals(xElementCollection[x], xDocumentCollection[y]))
bCompare = false;
}
}
Question Background:
I have extracted the following inner XML from a larger document:
<Counters total="1" executed="1" passed="1" error="0" failed="0" timeout="0" aborted="0" inconclusive="0" passedButRunAborted="0" notRunnable="0" notExecuted="0" disconnected="0" warning="0" completed="0" inProgress="0" pending="0" xmlns="http://microsoft.com/schemas/VisualStudio/TeamTest/2010" />
Issue:
Using the following code, I have attempted to access each of the elements of the above XML. I need to extract both the name i.e 'total' and its value '1';
XmlDocument innerXmlDoc = new XmlDocument();
innerXmlDoc.LoadXml(node.InnerXml);
XmlElement element = innerXmlDoc.DocumentElement;
XmlNodeList elements = element.ChildNodes;
for (int i = 0; i < elements.Count; i++)
{
//logic
}
If someone can tell me how to get these values that would be great.
You're iterating though the ChildNodes collection of your element and since the element does not have any, you're iterating through the empty nodelist it gives you.
You want to iterate through the Attributes collection instead:
XmlAttributeCollection coll = element.Attributes;
for (int i = 0; i < coll.Count; i++)
{
Console.WriteLine("name = " + coll[i].Name);
Console.WriteLine("value = " + coll[i].Value);
}
It seems you need a Dictionary. Try using LINQ to XML
var values = new Dictionary<string,string>();
var xmlDocument = XDocument.Load(path);
XNamespace ns = "http://microsoft.com/schemas/VisualStudio/TeamTest/2010";
values = xmlDocument
.Descendants(ns + "Counters")
.SelectMany(x => x.Attributes)
.ToDictionary(x => x.Name, x => (string)x));
Managed to solve this myself:
foreach (XmlNode node in nodes)
{
XmlDocument innerXmlDoc = new XmlDocument();
innerXmlDoc.LoadXml(node.InnerXml);
var list = innerXmlDoc.GetElementsByTagName("Counters");
for (int i = 0; i < list.Count; i++)
{
string val = list[i].Attributes["total"].Value;
}
};
parse the xml and form dictionary with same key for multiple values
Dictionary<string, List<string>> dictionary = new Dictionary<string, List<string>>();
doc.Load(confidencethresholdFilePath + "\\input.xml");
// XmlNodeList nodes = doc.DocumentElement.SelectNodes("/root/file");
doc.Normalize();
XmlNodeList nList = doc.GetElementsByTagName("key");
for (int temp = 0; temp < nList.Count; temp++)
{
string keyvalue = "";
XmlNode nNode = nList.Item(temp);
List<String> main = new List<string>();
ArrayList arrayList = new ArrayList(main);
XmlElement ele = (XmlElement)nNode;
keyvalue = ele.GetAttribute("value");
for (int i = 0; i < ele.ChildNodes.Count; i++)
{
if (ele.ChildNodes[i].ChildNodes.Count == 1)
{
Double sec = Double.Parse(ele.ChildNodes[i].InnerText);
int seg = TimeToSegment(sec);
Console.WriteLine("" + seg);
main.Add(Convert.ToString(seg));
}
}
dictionary.Add(keyvalue, main);
}
I want to comapare with single value but it shows error
dictionary.ContainsValue(s.sname) invalid arguments
I am not sure what you want to check but if you are trying to match keys then do this:
dictionary.ContainsKey(s.sname);
Or you might try:
IEnumerable<KeyValuePair<string,List<string>>> ienKeyVals = dictionary.Where(x => x.Value.Contains(s.sname));
parse the xml and form dictionary with same key for multiple values
A dictionary cannot contain duplicate keys. Its not possible to add duplicate items to a Dictionary - an alternative is to use the Lookup class.
Enumerable.ToLookup Method
Creates a generic Lookup from an IEnumerable.
What I have:
<?xml version="1.0" encoding="Unicode" standalone="yes"?>
<FiberItems>
<Fiber China="1a" England="1b" Japan="1c" France="1d" Korea="1e"/>
<Fiber China="2a" England="2b" Japan="2c" France="2d" Korea="2e"/>
</FiberItems>
What I want:
1.retrive all the value of "China" into a string array.
2.if a value of China is "1a", retrive all the value of the rest attributes(1b,1c,1d,1e),.
What I do:
1. I write codes for purpose 1 , but never works >_<
XDocument doc = XDocument.Load("/FiberItems.xml");
IEnumerable<string> query = from fiber in doc.Root.Elements("Fiber")
select (string)fiber.Attribute("China");
string[] myString = new string[3];
for (int i = 0; i < 3; i++)
{
foreach (string item in query)
{
myString[i] = (string)item;
}
}
2. for purpose 2, have no idea yet >_<
need helps
You probably shouldn't use an array to collect your data but when you do:
string[] myString = new string[3];
// for (int i = 0; i < 3; i++)
// {
int i = 0;
foreach (string item in query)
{
myString[i] = (string)item;
i += 1;
}
// }
You are doing 3x3 rounds where only 3 are needed.
You can use the following code:
XDocument root = XDocument.Load("/FiberItems.xml");
var attributesChina = root.Elements("FiberItems").Elements("Fiber").Attributes("China");
// attributesChina will contain all the values of china
foreach (XAttribute china in attributesChina)
{
string value = china.value;
}
Check out System.Xml.Linq.
Here's an example to get a list of all the attributes for one element.
var xml = #"<?xml version=""1.0"" encoding=""Unicode"" standalone=""yes""?>
<FiberItems>
<Fiber China=""1a"" England=""1b"" Japan=""1c"" France=""1d"" Korea=""1e""/>
<Fiber China=""2a"" England=""2b"" Japan=""2c"" France=""2d"" Korea=""2e""/>
</FiberItems>";
XDocument doc = XDocument.Parse(xml);
XElement ele = doc.Root.Element("Fiber");
var att = ele.Attributes();
//Load XML element
XElement root = XElement.Parse(File.ReadAllText("/FiberItems.xml"));
//All china attributes (retrieves 1a,2a)
var chinaAttributes= root.Elements().Attributes("China");
//load all rest attributes for china = 1a, loads 1b,1c,1d,1e
var chinaOneARestAttributes = root.Elements().Where(a=>a.Attribute("China")!=null && a.Attribute("China").Value=="1a").Attributes().Select(x=>x.Value).Where(x=>!String.Equals(x,"1a"));
UPDATED for Null Reference Exception. With the data i had tried earlier, i ensured Attribute China was present for all elements.
In XPath:
/FiberItems/Fiber[#China='1a']/#*
gets you all the attributes of Fiber elements with China='1a' and
/FiberItems/Fiber[#China='1a']/#*[local-name()!='China']
gets you the same sequence of attributes excluding the China attribute.
So your requirement is if the attribute China value is "1a" then get all the attribute value of that node. I think it should work
XDocument doc = XDocument.Load("/FiberItems.xml");
IEnumerable<string> query = from fiber in doc.Root.Elements("Fiber")
//condition 1
where (string)fiber.Attribute("China") == "1a"
//condition 2 : Select all except china attribute
select fiber.Attributes().Where(a => a.Name !="China");
Using LINQ to XML:
var xmlStr = #"<?xml version=""1.0"" encoding=""Unicode"" standalone=""yes""?>
<FiberItems>
<Fiber China=""1a"" England=""1b"" Japan=""1c"" France=""1d"" Korea=""1e""/>
<Fiber China=""2a"" England=""2b"" Japan=""2c"" France=""2d"" Korea=""2e""/>
</FiberItems>";
var doc = XDocument.Parse(xmlStr);
var query =
from fiber in doc.Descendants("Fiber")
where (string)fiber.Attribute("China") == "1a"
select String.Join(", ",
(from attr in fiber.Attributes()
where attr.Name != "China"
select (string)attr).ToArray());
This will return a sequence of the other attribute values for each Fiber element that contains a China attribute with the value 1a.