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How to merge one specific tag into one XML using c#?

I have two XMLs'
XML1:
'<?xml version="1.0" encoding="utf-8"?>
<Data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Filename>1234</Filename>
<Sequence Type="FRONT">
<Object>
<Value>3421</Value>
<Value>John</Value>
</Object>
</Sequence>
</Data>'
XML2:
'<?xml version="1.0" encoding="utf-8"?>
<Data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Filename>1234</Filename>
<Sequence Type="FRONT">
<Object>
<Value>1234</Value>
<Value>SAM</Value>
</Object>
</Sequence>
</Data>'
I want the output like below
'<?xml version="1.0" encoding="utf-8"?>
<Data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Filename>1234</Filename>
<Sequence Type="FRONT">
<Object>
<Value>3421</Value>
<Value>John</Value>
</Object>
<Object>
<Value>1234</Value>
<Value>SAM</Value>
</Object>
</Sequence>
</Data>'
I.e I want to merge Object tag from XML2 to XML1 using C# code.
Could someone please help me?

You can use XPath to select the nodes you need and then simply use .NET xml using System.Xml
For more information look at https://www.w3schools.com/xml/xpath_intro.asp
Load Xml Documents
I saved the two sample xml-files you provided to separate files and imported them like this
XmlDocument doc1 = new XmlDocument();
XmlDocument doc2 = new XmlDocument();
using (var sw = new StreamReader("xml1.xml"))
{
var text = sw.ReadToEnd();
doc1.LoadXml(text);
}
using (var sw = new StreamReader("xml2.xml"))
{
var text = sw.ReadToEnd();
doc2.LoadXml(text);
}
Select nodes with XPATH
We will take all elements that have the name 'object' and add them to child of the other xml's 'sequence'-element. Therefore we select the 'sequence'-element of one document and the 'object'elements of the other document.
var sequenceNodes = doc1.SelectSingleNode("/Data/Sequence");
var objectNodes = doc2.SelectNodes("/Data/Sequence/Object");
Concat the nodes into one document
Then we take each 'object'-element, import it into the other document-context and append it under the 'sequence'-node
foreach (XmlNode node in objectNodes)
{
XmlNode importedNode = doc1.ImportNode(node, true);
sequenceNodes.AppendChild(importedNode);
}
Output the file
using (var stringWriter = new StringWriter())
using (var xmlTextWriter = XmlWriter.Create(stringWriter))
{
doc1.WriteTo(xmlTextWriter);
xmlTextWriter.Flush();
File.AppendAllText("out.xml", stringWriter.GetStringBuilder().ToString());
}
The outputfile looks like this:

Please, take a look at this solution:
what-is-the-fastest-way-to-combine-two-xml-files-into-one
Using Union method seems to be what you are seeking.

Run an XSLT transformation:
<xsl:template name="merge">
<Data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Filename>1234</Filename>
<Sequence Type="FRONT">
<xsl:copy-of select="document('a.xml')//Object"/>
<xsl:copy-of select="document('b.xml')//Object"/>
</Sequence>
</Data>
</xsl:template>

Try following linq which joins all filenames with same value.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication166
{
class Program
{
const string FILENAME1 = #"c:\temp\test.xml";
const string FILENAME2 = #"c:\temp\test1.xml";
static void Main(string[] args)
{
XDocument doc1 = XDocument.Load(FILENAME1);
XNamespace ns1 = doc1.Root.GetDefaultNamespace();
XDocument doc2 = XDocument.Load(FILENAME2);
XNamespace ns2 = doc2.Root.GetDefaultNamespace();
var joins= from d1 in doc1.Descendants(ns1 + "Data")
join d2 in doc2.Descendants(ns2 + "Data")
on (string)d1.Element(ns1 + "Filename") equals (string)d2.Element(ns2 + "Filename")
select new { d1 = d1, d2 = d2};
foreach (var join in joins)
{
XElement d2Object = join.d2.Descendants("Object").FirstOrDefault();
join.d1.Descendants("Sequence").FirstOrDefault().Add(XElement.Parse(d2Object.ToString()));
}
}
}
}

Editing xml on live in C#. Deleting nodes that contain specific value

I have an xml document of type like this:
<?xml version="1.0" encoding="UTF-16"?>
<Recordset>
<Table>Recordset</Table>
<Rows>
<Row>
<Fields>
...
<Field>
<Alias>StatusName</Alias>
<Value>Scheduled</Value>
</Field>
<Field>
<Alias>U_Revision</Alias>
<Value>code00</Value>
</Field>
<Field>
<Alias>U_Quantity</Alias>
<Value>10.000000</Value>
</Field>
<Field>
<Alias>U_ActualQty</Alias>
<Value>0.000000</Value>
</Field>
...
</Fields>
</Row>
...
<Row>
<Fields>
...
<Field>
<Alias>StatusName</Alias>
<Value>Scheduled</Value>
</Field>
<Field>
<Alias>U_Revision</Alias>
<Value>code00</Value>
</Field>
<Field>
<Alias>U_Quantity</Alias>
<Value>150.000000</Value>
</Field>
<Field>
<Alias>U_ActualQty</Alias>
<Value>0.000000</Value>
</Field>
...
</Fields>
</Row>
</Rows>
</Recordset>
I have different values in field with alias of StatusName. There are some Scheduled, notScheduled, Realeased, Finished etc values. What I would like to do is to delete each node that contain node with alias StatusName and value lets say Scheduled or Finished.
I was thinking to do this more or less in that way however I am doing something wrong. May anybody let me on right way ?
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.LoadXml(xml);
XmlNodeList nodes = xmlDocument.SelectNodes("//Rows[#StatusName='Finished']");
for (int i = nodes.Count - 1; i >= 0; i--)
{
nodes[i].ParentNode.RemoveChild(nodes[i]);
}
var newXml = nodes.ToString();
I would like to delete the whole node if contains with alias StatusName and specific value lets say Finished.
I would expect the result in new string variable.

I like to work with DataTable with xml, I found it very easy.
I used a DataTable to work with your nodes.
So, I took your xml file and wrote some code for you that might help you:
//READ THE XML FILE
XmlDocument xmlDoc = new XmlDocument();
//My path
xmlDoc.LoadXml(Properties.Resources.test);
//Read the xml file into a dataSet
DataSet ds = new DataSet();
XmlNodeReader xnr = new XmlNodeReader(xmlDoc);
ds.ReadXml(xnr);
//Your data will be store in the 4's dataTable of the dataSet ( the <field> )
for(int i=0;i<ds.Tables[4].Rows.Count;i++)
{
//Check the value as you wish
//Here i want to suppress all the <Field> nodes with <Value> = "Scheduled"
if ( ds.Tables[4].Rows[i]["Value"].ToString().Equals("Scheduled"))
{
//RemoteAt will remove all the node, so the node <Field> in your example data
ds.Tables[4].Rows.RemoveAt(i);
//If you want to only remove the node <Value> (and not all the <Field> node ) just do ds.Tables[4].Rows["Value"]=null;
}
}
//Write your new content in a new xml file
//As you wanted here you just read the new xml file created as a string
using (var stringWriter = new StringWriter())
using (var xmlTextWriter = XmlWriter.Create(stringWriter))
{
ds.WriteXml(xmlTextWriter);
xmlTextWriter.Flush();
stringWriter.GetStringBuilder().ToString();
//Here the result is in stringWriter, and there is 6 <Field> nodes, and not 8 like before the suppress
}
//If you want to create a new xml file with the new content just do
ds.WriteXml(yourPathOfXmlFile);
//( like rewriting the previous xml file )

I assume, you are going to delete entire <Row> which matches your condition
i.e.,
<Row>
<Fields>
...
<Field>
<Alias>StatusName</Alias>
<Value>Finished</Value>
</Field>
</Fields>
</Row>
The required XPath:
//Row[Fields[Field[Alias[text()='StatusName'] and Value[text() = 'Finished']]]]
C#
string xPath = #"//Row[Fields[Field[Alias[text()='StatusName'] and Value[text() = 'Finished']]]]";
var nodes = xmlDocument.SelectNodes(xPath);
for (int i = nodes.Count - 1; i >= 0; i--)
{
nodes[i].ParentNode.RemoveChild(nodes[i]);
}
var newXml = xmlDocument.OuterXml;

Xml reader skipping values

I have the following XML snippet-
-<Row>
<RowType Id="1"Label="Scotland">1985</RowType>
<Year Id="11"Label="1994"/>
<Value Id="123">18</Value>
<Field Id="123"Label="Country">16</Field>
<Field Id="123"Label="Soccer">Yes</Field>
</Row>
-<Row>
<RowType Id="1"Label="England">1986</RowType>
<Year Id="11"Label="1994"/>
<Value Id="123">19</Value>
<Field Id="123"Label="Country">16</Field>
<Field Id="123"Label="Soccer">Yes</Field>
</Row>
-<Row>
<RowType Id="1"Label="Wales">1987</RowType>
<Year Id="11"Label="1994"/>
<Value Id="123">20</Value>
<Field Id="123"Label="Country">16</Field>
<Field Id="123"Label="Soccer">Yes</Field>
</Row>
I am using XmlReader to retrieve specific data from it like so -
using (XmlReader reader = XmlReader.Create(new StringReader(xml)))
{
string country = "";
string Year = "";
string count = "";
string tss= "";
string tss2 = "";
reader.MoveToContent();
while (reader.Read())
{
reader.ReadToFollowing("RowType");
country = reader.GetAttribute("Label");
country = country.Replace("'", "");
reader.ReadToFollowing("Year");
Year = reader.GetAttribute("Label");
reader.ReadToFollowing("Value");
count = reader.ReadElementContentAsString();
reader.ReadToFollowing("Field");
tss = reader.GetAttribute("Label");
reader.ReadToFollowing("Field");
tss2 = reader.GetAttribute("Label");
}
}
This is working fine for the first iteration, however on the second, it retrieves the values from the third row in the XML, and continues to skip to the next row after the one it should be parsing.
How can I resolve this?

Actually, your code is right; what is not right is the structure of the document. Or better, your code does not account for the specific structure of the document.
You can change that by adding the following bit:
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
using (XmlReader reader = XmlReader.Create(new StringReader(xml), settings))
By default the XMLReader expects ConformanceLevel.Document and thus the file should have a structure like the following one:
<main>
<Row id="5">
<RowType Id="1" Label="Scotland">1985</RowType>
<Year Id="11" Label="1994"/>
<Value Id="123">18</Value>
<Field Id="123" Label="Country">16</Field>
<Field Id="123" Label="Soccer">Yes</Field>
</Row>
<Row id="1">
<RowType Id="1" Label="England">1986</RowType>
<Year Id="11" Label="1994"/>
<Value Id="123">19</Value>
<Field Id="123" Label="Country">16</Field>
<Field Id="123" Label="Soccer">Yes</Field>
</Row>
<Row id="4">
<RowType Id="1" Label="Wales">1987</RowType>
<Year Id="11" Label="1994"/>
<Value Id="123">20</Value>
<Field Id="123" Label="Country">16</Field>
<Field Id="123" Label="Soccer">Yes</Field>
</Row>
</main>
I understand that the lack of separation between elements (e.g., Id="1"Label="Scotland" instead of Id="1" Label="Scotland") is a typo because separations have to exist in any case.
------------------- UPDATE
You report that your code does not deliver the expected result even after changing the conformance level. I have done a new test of your code and it works fine; at least, it iterates correctly. Thus, what I understand is that you want to retrieve different values than what you code does (it mixes app names, attributes and content).
Below you can see my own code (although I insist that yours iterates through the given information OK, too), which is more adaptable than yours; I am also including some comments in the parts where I think that you want to retrieve different information than what your code does. The basic idea is just retrieving information from the content (content), but your code takes it from anywhere.
string path = #"XML file";
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
using (XmlReader reader = XmlReader.Create(path, settings))
{
string country = "";
string Year = "";
string count = "";
string tss = "";
string tss2 = "";
while (reader.ReadToFollowing("Row"))
{
XmlReader reader2 = reader.ReadSubtree();
while (reader2.Read())
{
if (reader2.NodeType == XmlNodeType.Element)
{
if (reader2.Name == "RowType")
{
country = reader2.GetAttribute("Label");
country = country.Replace("'", ""); //country_year = reader.ReadElementContentAsString(); -> "Scotland" -> 1985
}
else if (reader2.Name == "Year")
{
//IF XML IS -> <Year Id="11">1994<Year/>
//Then -> Year = reader2.GetAttribute("Label")
Year = reader2.GetAttribute("Label"); //-> 1994
}
else if (reader2.Name == "Value")
{
count = reader2.ReadElementContentAsString();
}
else if (reader2.Name == "Field")
{
if (reader2.GetAttribute("Label") == "Country")
{
tss = reader2.ReadElementContentAsString(); //I understand that this is what you want to read, instead the Label name
}
else if (reader2.GetAttribute("Label") == "Soccer")
{
tss2 = reader2.ReadElementContentAsString();//I understand that this is what you want to read, instead the Label name
}
}
}
}
}
}
This should deliver what you are looking for; or, in the worst scenario, a much clear idea about how to deal with the XML reading. Also it might be a good thing to include a try...catch just in case; note that any error while reading/dealing with the variables would provoke the reading process to be immediately stopped.

We can use LINQ to get this done if you want.
If you really want to read all the values from Xml into some variable....you can try something in similar lines...
XElement po = XElement.Load(#"SoccerCup.xml");
IEnumerable<XElement> childElements =
from el in po.Elements()
select el;
foreach (XElement el in childElements)
{
var Year=el.Element("Year").Value;
var country = el.Element("country").Value;
var count =el.Elemet("Value").Value;
Console.WriteLine("Year: " + Year);
Console.WriteLine("Country: " + country);
Console.WriteLine("Count: " + count);
}
Hope this helps...

C# DataSet XML loading and saving

I've got XML that describes certain data (a template) that I want to be able to edit. I load XML into DataSet (see fig. 1 below), plug DataSet tables into DataGridView (switch between them using a separate comboBox), make changes and then save XML (simple DataSet.WriteXML directive). The XML I read looks very nice and humanly readable (see fig. 2 below), however, the written XML is nowhere near the original (see fig. 3 below).
My goal is to allow editing of XML document and preserve it in the same form on save.
What am I doing wrong? Code/XML blocks are below.
fig.1 - Reading XML into DataSet:
using (XmlReader xrMeta = XmlReader.Create(new StreamReader(ofdOpenXML.FileName)))
{
while (!xrMeta.EOF)
{
xrMeta.ReadToFollowing("record");
if (xrMeta.NodeType == XmlNodeType.Element)
{
xrMeta.ReadToFollowing("fields");
xrSub = xrMeta.ReadSubtree();
dt = new DataTable();
ds = new DataSet();
ds.ReadXml(xrSub);
dt = ds.Tables[0].Copy();
dt.TableName = "recordTypeId " + iTableNumber.ToString().PadLeft(2, '0');
MetaXML.Tables.Add(dt);
iTableNumber++;
}
}
dgvMetaXML.DataSource = MetaXML.Tables[0];
fig.2 - Input XML:
<?xml version='1.0'?>
<records>
<record>
<recordTypeId>01</recordTypeId>
<fields>
<field>
<fieldNID>entityID</fieldNID>
<fieldID>1</fieldID>
<fieldName>Entity ID</fieldName>
<fieldStartPos>1</fieldStartPos>
<fieldEndPos>6</fieldEndPos>
<fieldLength>6</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue></fieldDefaultValue>
</field>
<field>
<fieldNID>reserved0101</fieldNID>
<fieldID>2</fieldID>
<fieldName>Reserved</fieldName>
<fieldStartPos>7</fieldStartPos>
<fieldEndPos>8</fieldEndPos>
<fieldLength>2</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue> </fieldDefaultValue>
</field>
<field>
<fieldNID>deviceID</fieldNID>
<fieldID>3</fieldID>
<fieldName>Device ID</fieldName>
<fieldStartPos>9</fieldStartPos>
<fieldEndPos>23</fieldEndPos>
<fieldLength>15</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue></fieldDefaultValue>
</field>
</fields>
</record>
<record>
<recordTypeId>02</recordTypeId>
<fields>
<field>
<fieldNID>userID</fieldNID>
<fieldID>1</fieldID>
<fieldName>User ID</fieldName>
<fieldStartPos>1</fieldStartPos>
<fieldEndPos>6</fieldEndPos>
<fieldLength>6</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue></fieldDefaultValue>
</field>
<field>
<fieldNID>reserved0201</fieldNID>
<fieldID>2</fieldID>
<fieldName>Reserved</fieldName>
<fieldStartPos>7</fieldStartPos>
<fieldEndPos>8</fieldEndPos>
<fieldLength>2</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue> </fieldDefaultValue>
</field>
<field>
<fieldNID>testField</fieldNID>
<fieldID>3</fieldID>
<fieldName>Test Sequence</fieldName>
<fieldStartPos>9</fieldStartPos>
<fieldEndPos>23</fieldEndPos>
<fieldLength>15</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue></fieldDefaultValue>
</field>
</fields>
</record>
</records>
fig.3 - output XML:
<records>
<recordTypeId_x0020_01>
<fieldNID>entityID</fieldNID>
<fieldID>1</fieldID>
<fieldName>Entity ID</fieldName>
<fieldStartPos>1</fieldStartPos>
<fieldEndPos>6</fieldEndPos>
<fieldLength>6</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue />
</recordTypeId_x0020_01>
<recordTypeId_x0020_01>
<fieldNID>reserved0101</fieldNID>
<fieldID>2</fieldID>
<fieldName>Reserved</fieldName>
<fieldStartPos>7</fieldStartPos>
<fieldEndPos>8</fieldEndPos>
<fieldLength>2</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue />
</recordTypeId_x0020_01>
<recordTypeId_x0020_01>
<fieldNID>deviceID</fieldNID>
<fieldID>3</fieldID>
<fieldName>Device ID</fieldName>
<fieldStartPos>9</fieldStartPos>
<fieldEndPos>23</fieldEndPos>
<fieldLength>15</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue />
</recordTypeId_x0020_01>
<recordTypeId_x0020_02>
<fieldNID>userID</fieldNID>
<fieldID>1</fieldID>
<fieldName>User ID</fieldName>
<fieldStartPos>1</fieldStartPos>
<fieldEndPos>6</fieldEndPos>
<fieldLength>6</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue />
</recordTypeId_x0020_02>
<recordTypeId_x0020_02>
<fieldNID>reserved0201</fieldNID>
<fieldID>2</fieldID>
<fieldName>Reserved</fieldName>
<fieldStartPos>7</fieldStartPos>
<fieldEndPos>8</fieldEndPos>
<fieldLength>2</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue />
</recordTypeId_x0020_02>
<recordTypeId_x0020_02>
<fieldNID>testField</fieldNID>
<fieldID>3</fieldID>
<fieldName>Test Sequence</fieldName>
<fieldStartPos>9</fieldStartPos>
<fieldEndPos>23</fieldEndPos>
<fieldLength>15</fieldLength>
<fieldType>Alpha</fieldType>
<fieldRequired>Y</fieldRequired>
<fieldDefaultValue />
</recordTypeId_x0020_02>
</records>

Your code is reading to the next fields entry with each iteration using
xrMeta.ReadToFollowing("fields");
You're then renaming the base table from fields to recordTypeId XX with
dt.TableName = "recordTypeId " + iTableNumber.ToString().PadLeft(2, '0');`
and the space is being encoded to _x0020_ to avoid breaking up the tag.
You then add this renamed instance of fields back to the root with
MetaXML.Tables.Add(dt);
The output is a result of this.
What different result were you trying to achieve?

> The XML I read looks very nice and humanly readable (see fig. 2 below), however,
> the written XML is nowhere near the original (see fig. 3 below).
> What am I doing wrong?
the dotnet dataset can only write the xml-format of its internal representation.
this representation is similar to
<datasetName>
<dataTableName OtherFieldName='value'>
<FieldName>value</FieldName>
</dataTableName>
</datasetName>
So fields are elements or attributs. Your xml structre is more complex.
The dataset tries to interprete your data and puts the data into its internal structure, if possible. In your example the information recordTypeId is lost.
I had a similar problem and created a my own xml-post-processer that reformats the xml-output to my own xml-format that dataset can read but not write.

Ended up going with k3b's approach (sorry, can't upvote - need more reputation).
Here's the updated code to read the XML into DataSet (keep in mind, it's just a mock code to make things work for the first time. You should revise it to be more efficient and ultimately make more sense):
int iTableNumber = 1;
// Read input XML
using (XmlReader xrMeta = XmlReader.Create(new StreamReader(ofdOpenXML.FileName)))
{
while (!xrMeta.EOF)
{
// Advance to next <record>
xrMeta.ReadToFollowing("record");
if (xrMeta.NodeType == XmlNodeType.Element)
{
// Advance to the next <fields>
xrMeta.ReadToFollowing("fields");
// Read underlying XML - it will be a set of flat tables
xrSub = xrMeta.ReadSubtree();
dt = new DataTable();
ds = new DataSet("fields");
ds.ReadXml(xrSub);
dt = ds.Tables[0].Copy();
dt.TableName = "field_" + iTableNumber.ToString().PadLeft(2, '0');
MetaXML.Tables.Add(dt);
iTableNumber++;
}
}
}
// Populate comboBox to switch between tables in DataSet
for (int i = 0; i < MetaXML.Tables.Count; i++)
{
cbShowTable.Items.Add(MetaXML.Tables[i].TableName);
}
// Populate DataGridView with first read table
dataGridViewMetaXML.DataSource = MetaXML.Tables[0];
Saving XML now looks like this:
// This is our output XML file
// Technically, it should have been the same name as the input one
// but for the purposes of testing it isn't
StreamWriter srFile = new StreamWriter((#"testingOutputXML.xml"));
StringWriter stWriter;
StringBuilder sbXML = new StringBuilder();
// Headers to play nice
sbXML.AppendLine("<?xml version='1.0'?>");
sbXML.AppendLine("<records>");
DataTable dt;
for (int i = 0; i < MetaXML.Tables.Count; i++)
{
// This is where we have to recreate the structure manually
sbXML.AppendLine("<record>");
sbXML.Append("<recordTypeId>");
sbXML.Append((1+ i).ToString().PadLeft(2,'0'));
sbXML.AppendLine("</recordTypeId>");
dt = new DataTable();
dt = MetaXML.Tables[i].Copy();
dt.TableName = "field";
stWriter = new StringWriter();
dt.WriteXml(stWriter, false);
stWriter.WriteLine();
sbXML.Append(stWriter.GetStringBuilder());
// Need to clean up because DataTable's WriteXML() method
// wraps the data in <DocumentElement> and </DocumentElement> tags
sbXML.Replace("DocumentElement", "fields");
sbXML.AppendLine("</record>");
}
sbXML.AppendLine("</records>");
srFile.Write(sbXML.ToString());
srFile.Flush();
srFile.Close();
MessageBox.Show("Done!");
Thanks everyone who chipped in with the answers, it steered me to the right track.

Deserialize XML using XmlSerializer

I have the follwoing XML
<?xml version="1.0" ?>
<SERVICES.OUTPUTResponse>
<Results>
<Result>
<Dataset name="OutputData">
<Row>
<country>USA</country>
<pubyear>9986</pubyear>
<numart>123</numart>
<numcites>456</numcites>
</Row>
<Row>
<country>USA</country>
<pubyear>97</pubyear>
<numart>895</numart>
<numcites>231</numcites>
</Row>
</Dataset>
<Dataset name="Result 2">
<Row>
<Result_2>
true
</Result_2>
</Row>
</Dataset>
</Result>
</Results>
<_Probe></_Probe>
</SERVICES.OUTPUTResponse>
and i tried to deserialize by using XmlSerializer but it returns null.
The Property class which i used is
public class XMLDetails
{
public string country { get; set; }
public string pubyear { get; set; }
public string numart { get; set; }
public string numcites { get; set; }
}
Deserialize code is
XmlRootAttribute xRoot = new XmlRootAttribute();
xRoot.ElementName = "SERVICES.OUTPUTResponse";
xRoot.IsNullable = true;
var serializer = new XmlSerializer(typeof(XMLDetails), xRoot);
var reader = new StringReader(remoteXml);
var objpublication = (XMLDetails)(serializer.Deserialize(reader));
Please help me to reslove it

If you want to use Linq To Xml
XDocument xDoc = XDocument.Parse(xml); //or XDocument.Load(filename);
var rows = xDoc.XPathSelectElement("//Dataset[#name='OutputData']")
.Descendants("Row")
.Select(r => new XMLDetails
{
country = r.Element("country").Value,
pubyear = r.Element("pubyear").Value,
numart = r.Element("numart").Value,
numcites = r.Element("numcites").Value,
})
.ToList();
PS: required namespaces System.Xml.Linq and System.Xml.XPath

First you need to use xsd.exe for generating .xsd (schema) file and .cs (class) file
XML Schema Definition Tool (Xsd.exe)
You can run "Visual Studio Command Prompt" and xsd.exe path definition is already defined it is ready to use.
Type the following command in the console
*I assume your xml is saved in "yourxmlfile.xml"
>xsd.exe yourxmlfile.xml
this command will generate "yourxmlfile.xsd" file
then execute the following command for generating .cs file
But before change the
<xs:element name="Results" minOccurs="0" maxOccurs="unbounded"> line with
<xs:element name="Results" minOccurs="0" maxOccurs="1"> in generated xsd file
(to change Results to property instead of array propery)
>xsd.exe yourxmlfile.xsd /c
this command will generate "yourxmlfile.cs"
now you can add this file to your project and you can deserialize xml file as below
var serializer = new XmlSerializer(typeof(SERVICESOUTPUTResponse));
SERVICESOUTPUTResponse instance = null;
using (var fileStream = File.OpenRead(#"c:\path_to\yourxmlfile.xml"))
{
instance = (SERVICESOUTPUTResponse)serializer.Deserialize(fileStream);
}