This question already has answers here:
How do I read and parse an XML file in C#?
(12 answers)
Closed 6 years ago.
How to read this type of XML in c#? Do you have any sample code?
<?xml version="1.0" encoding="ISO-8859-1" ?>
<row rownum="1">
<column colnum="1" name="PROJECT NUMBER">1</column>
<column colnum="2" name="ROLE">Project Manager</column>
<column colnum="3" name="FIRSTNAME">Angie</column>
<column colnum="4" name="LASTNAME">Emanual</column>
</row><row rownum="2">
<column colnum="1" name="PROJECT NUMBER">2</column>
<column colnum="2" name="ROLE">Developer</column>
<column colnum="3" name="FIRSTNAME">Ruha</column>
<column colnum="4" name="LASTNAME">Rao</column>
</row>
The following code will read xml fragments
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication29
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
XmlReader reader = XmlTextReader.Create(FILENAME,settings);
List<object> results = new List<object>();
while (!reader.EOF)
{
if (reader.Name != "row")
{
reader.ReadToFollowing("row");
}
if (!reader.EOF)
{
XElement row = (XElement)XElement.ReadFrom(reader);
results.Add(new object[] {
row.Elements("column").Select(y => new {
rowNum = (int)row.Attribute("rownum"),
colNum = (int)y.Attribute("colnum"),
colName = (string)y.Attribute("name"),
value = (string)y
}).FirstOrDefault()
});
}
}
}
}
}
Related
I am looking for a way to convert an xml stream to csv, but I only find solution for 1 collection, i.e. my xml looks like :
<?xml version="1.0" encoding="UTF-8"?>
<CompactData>
<Header>
<ID>id_ofç=_file</ID>
<Test>false</Test>
</Header>
<data:DataSet>
<data:Series FREQ="M" item="item1" unit="unit1">
<data:Obs TIME_PERIOD="2015-01" OBS_VALUE="5.47" />
<data:Obs TIME_PERIOD="2015-02" OBS_VALUE="5.01" />
<data:Obs TIME_PERIOD="2015-03" OBS_VALUE="5.39" />
</data:Series>
<data:Series FREQ="M" item="item2" unit="unit2">
<data:Obs TIME_PERIOD="2015-01" OBS_VALUE="5.47" />
<data:Obs TIME_PERIOD="2015-02" OBS_VALUE="5.01" />
<data:Obs TIME_PERIOD="2015-03" OBS_VALUE="5.39" />
</data:Series>
</data:DataSet>
</CompactData>
Here I want a csv with the format :
FREQ,item,unit,TIME_PERIOD,OBS_VALUE
what is the best way to do that?
Thanks!
Try following :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Xml;
using System.Xml.Linq;
using System.IO;
namespace ConsoleApplication166
{
class Program
{
const string XML_FILENAME = #"c:\temp\test.xml";
const string CSV_FILENAME = #"c:\temp\test.csv";
static void Main(string[] args)
{
StreamWriter writer = new StreamWriter(CSV_FILENAME);
writer.WriteLine(string.Join(",", new string[] {"FREQ","item","unit","TIME_PERIOD","OBS_VALUE"}));
XDocument doc = XDocument.Load(XML_FILENAME);
XElement dataSet = doc.Descendants().Where(x => x.Name.LocalName == "DataSet").FirstOrDefault();
XNamespace nsData = dataSet.GetNamespaceOfPrefix("data");
foreach (XElement series in dataSet.Elements(nsData + "Series"))
{
string freq = (string)series.Attribute("FREQ");
string item = (string)series.Attribute("item");
string unit = (string)series.Attribute("unit");
foreach (XElement obs in series.Elements(nsData + "Obs"))
{
DateTime time = DateTime.ParseExact((string)obs.Attribute("TIME_PERIOD"), "yyyy-MM", System.Globalization.CultureInfo.InvariantCulture);
double value = (double)obs.Attribute("OBS_VALUE");
writer.WriteLine(string.Join(",", new string[] {freq, item, unit,time.ToString(), value.ToString()}));
}
}
writer.Flush();
writer.Close();
}
}
}
I have an XML document that contains data about two table.
The structure is like this
<doc>
<table name="ordini">
<row>
<field name="id">0431524493258932</field>
<field name="anno">2018</field>
<field name="att">0000</field>
<field name="cen">01</field>
...
</row>
<row>
<field name="id">1041524493596749</field>
<field name="anno">2018</field>
<field name="att">0000</field>
<field name="cen">01</field>
...
</row>
...
</table>
<table name="righe">
<row>
<field name="id">0431524493258932</field>
<field name="anno">2018</field>
<field name="att">0000</field>
<field name="cen">4U</field>
....
</table>
<doc>
I am trying this way with first table in XML with a lot of confusion
var doc = XDocument.Load(filename);
var ordcli = doc.Descendants("table")
.Where(i => (string)i.Attribute("name") == "ordini")
.Descendants("row")
.Select(e => e.Elements());
foreach (var item in ordcli)
{
foreach (var i in item)
{
Console.WriteLine(i);
}
}
How can I read every row element and get field name to instantiate my Order class and OrderDetails class?
When I have my List<Order> and List<OrderDetails> filled I can populate relative tables.
I hope I've explained my requirement well.
I've never used XlmReader or Linq2Xml. It's first time.
try following code :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
new XML_DataSet(FILENAME);
}
}
public class XML_DataSet
{
static DataSet ds = new DataSet();
public XML_DataSet(string filename)
{
XDocument doc = XDocument.Load(filename);
foreach(XElement table in doc.Descendants("table"))
{
ds.Tables.Add(ReadTable(table));
}
}
private DataTable ReadTable(XElement table)
{
DataTable dt = new DataTable();
Boolean first = true;
foreach (XElement xRow in table.Elements("row"))
{
if (first)
{
foreach (XElement field in xRow.Elements("field"))
{
dt.Columns.Add((string)field.Attribute("name"), typeof(string));
}
first = false;
}
DataRow newRow = dt.Rows.Add();
foreach (XElement field in xRow.Elements("field"))
{
newRow[(string)field.Attribute("name")] = (string)field;
}
}
return dt;
}
}
}
I'm new to C# & I'm trying to read XML attribute from XML file in my Asp.net web project, when i retrieve attribute content i get this result :
"System.XML.Attribute;"
here is XML file:
<?xml version="1.0" encoding="UTF-8" standalone="true"?>
<!--creating XML file-->
<Document PagesInDocument="1" Filename="YahyaXML">
<Page Filename="YahyaXML" ZonesInPage="1" PageID="0">
<Zone TextLinesInZone="2" zoneLRY="558" zoneLRX="1202"
zoneULY="3" zoneULX="886" ZoneID="0">
<TextLine Content="aaaaaaaaaaa" TextLineID="0"/>
<TextLine Content="aaaaaaaaaaaaaaaaaa" TextLineID="1"/>
</Zone>
</Page>
</Document>
Here is my c# code:
XmlDocument doc = new XmlDocument();
doc.Load(#"C:\Program Files (x86)\NovoDynamics\NovoVerus\api\examples\C#Samples\WebAppTest\Uploads\test-ht.xml");
StringBuilder Content_Value = new StringBuilder();
XmlNodeList aNodes = doc.SelectNodes("/Document/Page/Zone");
XmlNodeList bNodes = doc.SelectNodes("/Document/Page/Zone/TextLine");
foreach (XmlNode aNode in aNodes)
{
XmlAttribute ULX_xml = aNode.Attributes["zoneULX"];
XmlAttribute ULY_xml = aNode.Attributes["zoneULY"];
XmlAttribute LRX_xml = aNode.Attributes["zoneLRX"];
XmlAttribute LRY_xml = aNode.Attributes["zoneLRY"];
if (ULX_xml.Value == TextBox5.Text && ULY_xml.Value == TextBox6.Text && LRX_xml.Value == TextBox7.Text && LRY_xml.Value == TextBox8.Text )
{
foreach (XmlNode bNode in bNodes)
{
//XmlAttribute ContentAttribute = bNode.Attributes["Content"];
if (bNode.Attributes["Content"].Value != null)
{
Content_Value.Append(bNode.Attributes["Content"].Value.ToString());
}
}
Content_Value.Append("\n");
}
}
TextBox9.Text = Content_Value.ToString();
Your code works. Try change first string in your xml file to:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
More: https://msdn.microsoft.com/en-us/library/ms256048(v=vs.120).aspx
Using xml Linq
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
StreamReader reader = new StreamReader(FILENAME);
reader.ReadLine(); //skip identification
XDocument doc = XDocument.Load(reader);
var results = doc.Descendants("Page").Select(x => new
{
filename = (string)x.Attribute("Filename"),
page = (int)x.Attribute("ZonesInPage"),
id = (int)x.Attribute("PageID"),
zones = x.Elements("Zone").Select(y => new {
textLines = (int)y.Attribute("TextLinesInZone"),
ulx = (int)y.Attribute("zoneULX"),
uly = (int)y.Attribute("zoneULY"),
lrx = (int)y.Attribute("zoneLRX"),
lry = (int)y.Attribute("zoneLRY"),
textLine = y.Elements("TextLine").Select(z => new {
content = (string)z.Attribute("Content"),
id = (int)z.Attribute("TextLineID")
}).ToList()
}).ToList()
}).ToList();
}
}
}
This is my XML file. I need to select one test element and get all attributes name from its result child nodes.
<?xml version="1.0" encoding="UTF-8"?>
<summary>
<test>
<id>test 1</id>
<result value="-45">330</result>
<result value="0">300</result>
<result value="45">340</result>
</test>
<test>
<id>test 3</id>
<result value="-45">330</result>
<result value="0">300</result>
<result value="45">340</result>
</test>
</summary>
I wrote below code. but repeat same values and I want to stop it.
XmlDocument xd = new XmlDocument();
xd.Load(_xmlFilePath);
XmlNodeList nodelist = xd.GetElementsByTagName("result");
foreach (XmlNode node in nodelist)
{
string attrVal = node.Attributes["value"].Value;
Console.WriteLine(attrVal);
}
Any suggestion is appreciated.
Thanks.
You can use LINQ to Xml with XDocument class
var doc = XDocument.Load(_xmlFilePath);
var distinctResults = doc.Descendants("result")
.Select(element => element.Attribute("value").Value)
.Distinct();
foreach(var result in distinctResults)
{
Console.WriteLine(result);
}
Or with using of HashSet<string>
var results = doc.Descendants("result")
.Select(element => element.Attribute("value").Value);
var distinctResults = new HashSet<string>(results);
foreach(var result in distinctResults)
{
Console.WriteLine(result);
}
Try following :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication34
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
string id = "test 1";
var results = doc.Descendants("test").Where(x => (string)x.Element("id") == id).FirstOrDefault().Elements("result").Select(x => new
{
angle = (int)x.Attribute("value"),
length = (int)x
}).ToList();
}
}
}
I am looking for a solution that help me to read fast an XML DataBase Export file,
what looks like this :
<?xml version="1.0" encoding="utf-8"?>
<database name="backup_db">
<table name="users">
<column name="username">user1</column>
<column name="password">pass1</column>
<column name="email">email1</column>
<column name="regdate">2015-01-22 23:31:59</column>
<column name="lastlogin">2016-12-11 01:56:24</column>
<column name="banned">0</column>
</table>
<table name="users">
...
</table>
...
200000 table rows
</database>
I make an solution that enumerate all the element and store the column Value, but have a long execution.
var xd = new XmlDocument();
string path = Server.MapPath("~/App_Data/users.xml");
var fs = new FileStream(path, FileMode.Open);
xd.Load(fs);
var list = xd.GetElementsByTagName("table");
for (var i = 0; i < list.Count; i++)
{
...
}
fs.Close()
Whot to make that work faster ?
Try following. It only adds data as string and will only work if the columns are always in the same order (no skipped columns)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XmlReader reader = XmlReader.Create(FILENAME);
if (reader.Name != "database")
{
reader.ReadToFollowing("database");
}
reader.MoveToFirstAttribute();
string databaseName = reader.Value;
DataSet ds = new DataSet(databaseName);
DataTable dt = null;
while (!reader.EOF)
{
if (reader.Name != "table")
{
reader.ReadToFollowing("table");
}
if (!reader.EOF)
{
XElement table = (XElement)XElement.ReadFrom(reader);
string tableName = (string)table.Attribute("name");
if (!ds.Tables.Contains(tableName))
{
dt = new DataTable(tableName);
ds.Tables.Add(dt);
dt.Columns.AddRange(table.Elements("column").Select(x => new DataColumn((string)x.Attribute("name"))).ToArray());
}
DataRow newRow = ds.Tables[tableName].Rows.Add();
newRow.ItemArray = table.Elements("column").Select(x => (string)x).ToArray();
}
}
}
}
}