Develop Reference

Reading the XML file in c#

I have the following XML file (parse.xml):
<Invoice>
<InvoiceHeader>
<Name>cust1</Name>
<Number>5689</Number>
</InvoiceHeader>
<InvoiceHeader>
<Name>cust1</Name>
<Number>5689</Number>
<Number>5459</Number>
</InvoiceHeader>
<InvoiceHeader>
<Name>cust1</Name>
<Number>5689</Number>
<Number>5645</Number>
<Number>5879</Number>
</InvoiceHeader>
</Invoice>
I would like to read it into a list of the following class:
public class Details
{
public string Name {get; set;}
public List<string> Number{get; set;}
}
As you can see, in the XML the node Number can appear more than one time in InvoiceHeader. I'm not sure how to parse this XML into the List<Details> class.
I tried my code:
List<Details> details = new List<Details>;
XmlDocument doc = new XmlDocument();
doc.Load("parse.xml");
XmlNodeList nodeList = doc.SelectNodes("/Invoice/InvoiceHeader");
foreach (XmlNode node in nodeList)
{
details.Add(node["Name"].InnerText);
XmlNodeList dd = node.ChildNodes;
foreach (XmlNode inch in dd)
{
details.Add(node["Number"].InnerText);
}
}
I know this code isn't right but wanted to show what I have done so far.

nodeList is a list of <InvoiceHeader> nodes. One method to solve this problem would be to iterate through the ChildNodes of nodeList and use the property Name to create the Details class in each iteration.
Your code was almost there... I've just updated it slightly so it correctly adds the <Number> elements to the list:
List<Details> detailsList = new List<Details>();
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNodeList nodeList = doc.SelectNodes("/Invoice/InvoiceHeader");
foreach (XmlNode node in nodeList)
{
// create details class for each InvoiceHeader
Details detail = new Details();
detail.Number = new List<string>();
// loop over child nodes to get Name and all Number elements
foreach (XmlNode child in node.ChildNodes)
{
// check node name to decide how to handle the values
if (child.Name == "Name")
{
detail.Name = child.InnerText;
}
else if (child.Name == "Number")
{
detail.Number.Add(child.InnerText);
}
}
detailsList.Add(detail);
}
Then you can display the results like this:
foreach (var details in detailsList)
{
Console.WriteLine($"{details.Name}: {string.Join(",", details.Number)}");
}
// output
cust1: 5689
cust1: 5689,5459
cust1: 5689,5645,5879
Another method you could consider is Linq-to-Xml. The below code produces the same output as that above:
XDocument doc = XDocument.Load(path);
var details = doc.Descendants("Invoice")
.Elements()
.Select(node => new Details()
{
Name = node.Element("Name").Value,
Number = node.Elements("Number").Select(child => child.Value).ToList()
})
.ToList();

Please find below code attachment
You need to follow this few steps
using System.Xml;
XmlTextReader reader = new XmlTextReader ("file name.xml");
while (reader.Read())
{
// Do some work here on the data.
Console.WriteLine(reader.Name);
}
Console.ReadLine();
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element: // The node is an element.
Console.Write("<" + reader.Name);
Console.WriteLine(">");
break;
case XmlNodeType.Text: //Display the text in each element.
Console.WriteLine (reader.Value);
break;
case XmlNodeType. EndElement: //Display the end of the element.
Console.Write("</" + reader.Name);
Console.WriteLine(">");
break;
}
}
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element: // The node is an element.
Console.Write("<" + reader.Name);
while (reader.MoveToNextAttribute()) // Read the attributes.
Console.Write(" " + reader.Name + "='" + reader.Value + "'");
Console.WriteLine(">");
break;
case XmlNodeType.Text: //Display the text in each element.
Console.WriteLine (reader.Value);
break;
case XmlNodeType. EndElement: //Display the end of the element.
Console.Write("</" + reader.Name);
Console.WriteLine(">");
break;
}
}
finally save code and run them...
Complete code listing
using System;
using System.Xml;
namespace ReadXMLfromFile
{
/// <summary>
/// Summary description for Class1.
/// </summary>
class Class1
{
static void Main(string[] args)
{
XmlTextReader reader = new XmlTextReader ("file name.xml");
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element: // The node is an element.
Console.Write("<" + reader.Name);
Console.WriteLine(">");
break;
case XmlNodeType.Text: //Display the text in each element.
Console.WriteLine (reader.Value);
break;
case XmlNodeType.EndElement: //Display the end of the element.
Console.Write("</" + reader.Name);
Console.WriteLine(">");
break;
}
}
Console.ReadLine();
}
}
}

C# xml reader, same element name

I'm trying to read an element from my xml file.
I need to read an string in an "link" element inside the "metadata",
but there are 2 elements called "link", I only need the second one:
<metadata>
<name>visit-2015-02-18.gpx</name>
<desc>February 18, 2015. Corn</desc>
<author>
<name>text</name>
<link href="http://snow.traceup.com/me?id=397760"/>
</author>
<link href="http://snow.traceup.com/stats/u?uId=397760&vId=1196854"/>
<keywords>Trace, text</keywords>
I need to read this line:
<link href="http://snow.traceup.com/stats/u?uId=397760&vId=1196854"/>
This is the working code for the first "link" tag, it works fine,
public string GetID(string path)
{
string id = "";
XmlReader reader = XmlReader.Create(path);
while (reader.Read())
{
if ((reader.NodeType == XmlNodeType.Element) && (reader.Name == "link"))
{
if (reader.HasAttributes)
{
id = reader.GetAttribute("href");
MessageBox.Show(id + "= first id");
return id;
//id = reader.ReadElementContentAsString();
}
}
}
return id;
}
Does anyone know how I can skip the first "link" element?
or check if reader.ReadElementContentAsString() contains "Vid" or something like that?
I hope you can help me.

xpath is the answer :)
XmlReader reader = XmlReader.Create(path);
XmlDocument doc = new XmlDocument();
doc.Load(reader);
XmlNodeList nodes = doc.SelectNodes("metadata/link");
foreach(XmlNode node in nodes)
Console.WriteLine(node.Attributes["href"].Value);

Use the String.Contains method to check if the string contains the desired substring, in this case vId:
public string GetID(string path)
{
XmlReader reader = XmlReader.Create(path);
while (reader.Read())
{
if ((reader.NodeType == XmlNodeType.Element) && (reader.Name == "link"))
{
if (reader.HasAttributes)
{
var id = reader.GetAttribute("href");
if (id.Contains(#"&vId"))
{
MessageBox.Show(id + "= correct id");
return id;
}
}
}
return String.Empty;
}
If acceptable you can also use LINQ2XML:
var reader = XDocument.Load(path); // or XDocument.Parse(path);
// take the outer link
Console.WriteLine(reader.Root.Element("link").Attribute("href").Value);
The output is always:
http://snow.traceup.com/stats/u?uId=397760&vId=1196854= first id
Another options is to use XPath like #user5507337 suggested.

XDocument example:
var xml = XDocument.Load(path); //assuming path points to file
var nodes = xml.Root.Elements("link");
foreach(var node in nodes)
{
var href = node.Attribute("href").Value;
}

reading xml using xml parser

I need to get user id corresponding terminal id. any help. But it's giving error:
The ReadElementContentAsString method is not supported on node type
None. Line 1, position 668.
string strTerminalId = "E";
XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(STRING); //
string strxml = xdoc.OuterXml;
string strUserName = "";
bool Flag = false;
using (XmlReader reader = XmlReader.Create(new StringReader(strxml)))
{
while (reader.Read())
{
if (reader.IsStartElement())
{
switch (reader.Name)
{
case "Row":
reader.Read();
if (Flag == false)
{
reader.ReadToFollowing("TERM-ID");
reader.Read();
string strTERMID = reader.ReadElementContentAsString().ToString();
if (strTERMID == strTerminalId)
{
while (reader.ReadToFollowing("NA") && (Flag == false))
{
reader.Read();
string strUser = reader.ReadContentAsString();
if (strUser == "NA")
{
reader.ReadToFollowing("c:value");
reader.Read();
strUserName = reader.ReadContentAsString();
Flag = true;
}
}
}
}
break;
}
}
}
The content of the XML document is
<GetReferenceTableResponse xmlns='http://tempuri.org/'>
<GetReferenceTableResult>
<Table Name='C' ID='46899' xmlns=''>
<Columns>
<Col ID='7442' Name='TD' Datatype='T' Length='8' AttributeDescription='Terminal ID' IsKey='Y'/>
<Col ID='7443' Name='D' Datatype='T' Length='50' AttributeDescription='Description' IsKey=' '/>
<Col ID='7444' Name='U' Datatype='T' Length='8' AttributeDescription='USER-ID' IsKey='' />
</Columns>
<Rows>
<Row RowsetID=\"1\">
<TERM-ID ID='279598'>A</TERM-ID>
<DESC-TXT ID='279622'>ASC</DESC-TXT>
<USER-ID ID='279646'>A</USER-ID>
</Row>
</Rows>
</Table>
</GetReferenceTableResult>
</GetReferenceTableResponse>

ReadToFollowing navigates to the nearest element with a given name and the next Read will go inside that element - straight to the Text. So you would need ReadContentAsString in both cases.
In your case that would work:
using (XmlReader reader = XmlReader.Create(new StringReader(strxml)))
{
while (reader.Read())
{
if (reader.IsStartElement())
{
switch (reader.Name)
{
case "Row":
if (!Flag)
{
reader.ReadToFollowing("TERM-ID");
reader.Read();
string strTERMID = reader.ReadContentAsString();
if (strTERMID == strTerminalId && reader.ReadToNextSibling("USER-ID"))
{
reader.Read();
strUserName = reader.ReadContentAsString();
Flag = true;
}
}
break;
}
}
}
}
I have removed the first Read just after case "Row": - otherwise you would miss the proper element and as well removed ReadToFollowing("USER-ID") from the while loop - it is okey to go into the element only once.
But as #kennyzx said - it is much simpler to parse the xml using XDoccument.
UPDATE
I am not sure about your schema but if it is possible for a Row element to not have User-Id, then with ReadToFollowing it is possible to skip to the next available 'User-ID' element, even if it is not in the same 'Row' element. So it is better to use ReadToNextSibling in the second case.

something wrong reading XML LINQ

This is my source XML :
<?xml version="1.0" encoding="UTF-8"?>
<cteProc xmlns="http://www.portalfiscal.inf.br/cte" versao="1.04">
<CTe>
<infCte versao="1.04" Id="CTe35121004211559000111570010000118991000119858">
<ide>
<cUF>35</cUF>
<cCT>00011985</cCT>
<CFOP>7358</CFOP>
<natOp>PRESTACAO DE SERVICO DE TRANSPORTE</natOp>
<forPag>1</forPag>
<mod>57</mod>
<serie>1</serie>
<nCT>11899</nCT>
<dhEmi>2012-10-01T09:34:45</dhEmi>
</ide>
<compl>
<emit>
<rem>
<dest>
<vPrest>
<imp>
<infCTeNorm>
</infCte>
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
</CTe>
<protCTe versao="1.04">
</cteProc>
I have read this file with this code :
XmlTextReader reader = new XmlTextReader(#"C:\Separados\56000858_v01.04-procCTe.xml");
XmlNodeType type;
while (reader.Read())
{
type = reader.NodeType;
if (type == XmlNodeType.Element)
{
if (reader.Name == "cUF")
{ reader.Read(); Xmunini = reader.Value; textBox1.Text = Xmunini;}
if (reader.Name == "cCT")
{ reader.Read(); vtprest = reader.Value; textBox2.Text = vtprest;}
if (reader.Name == "natOp")
{ reader.Read(); UFIni = reader.Value; textBox3.Text = UFIni; }
if (reader.Name == "nCT")
{ reader.Read(); NCT = reader.Value; textBox4.Text = NCT;}
But, i have read in many post here , the method with LINQ is more efficient, i have try write this :
var custs45 = from c in XElement.Load(#"C:\Separados\56000858_v01.04-procCTe.xml").Elements("Cte")
select new {
CFOP = c.Element("CFOP").Value,
xMunIni = c.Element("xMunIni").Value
};
My question is how to assign CFOP and Xmunini to a variable?? i have write this but do not show anything
string CFF;
foreach (var valores in custs45)
{
CFF = valores.CFOP.ToString() ;
}

You can't find nodes, because root node has namespace delcared. Here is the solution:
XDocument xdoc = XDocument.Load(path_to_xml);
XNamespace ns = "http://www.portalfiscal.inf.br/cte";
string CFF = (string)xdoc.Descendants(ns + "CFOP").Single();
Also you have typo in CTe element name. And you are missing that CFOP is not direct child of CTe. And there is still no xMunIni element in your xml.
Your original query should look like this:
XNamespace ns = "http://www.portalfiscal.inf.br/cte";
var custs45 = from ide in XElement.Load(path_to_xml).Descendants(ns + "ide")
select new
{
CFOP = (string)ide.Element(ns + "CFOP"),
xMunIni = (string)ide.Element(ns + "xMunIni")
};

Getting the value of XML tag xith XMLReader and add to LinkedList C#

I am a new to programming, and have a serious problem and cant get out of it.
I have 5 XML URLs. such as http://www.shopandmiles.com/xml/3_119_3.xml
This is an XML URL which I have to get values and write to database in related columns.
My column names and XML tag names do match.
When I write the below code, reader element miss null xml values. Some tags do not have value inside. I have to add them null to linkedlist because after that code, i am going through the linked list but the order doesnt match if ı cant add a value for null xml values. So column names and data inside doesnt match. i lose the order. My all code is here, you can also check comment in the code if that helps. Thank you all.
public void WebServiceShopMilesCampaignsXMLRead(string URL)
{
XmlReader reader = XmlReader.Create(URL);
LinkedList<string> linkedList = new LinkedList<string>();
List<ShopAndMilesCampaigns> shopMileCampaigns = new List<ShopAndMilesCampaigns>();
try
{
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Text:
linkedList.AddLast(reader.Value);
break;
}
}
}
catch (XmlException exception)
{
Console.WriteLine("XML okurken bir sorun oluştu, hata detayı --> " + exception.Message);
}
LinkedListNode<string> node = linkedList.First;
while (node != null)
{
ShopAndMilesCampaigns shopMilesCampaign = new ShopAndMilesCampaigns();
shopMilesCampaign.Name = node.Value; // Null values mixes up the order because i cant add as null with reader.read above
node = node.Next;
shopMilesCampaign.Summary = node.Value;
node = node.Next;
shopMilesCampaign.AccountName = node.Value;
node = node.Next;
shopMilesCampaign.Category = node.Value;
node = node.Next;
shopMilesCampaign.Sector = node.Value;
node = node.Next;
shopMilesCampaign.Details = node.Value;
node = node.Next;
shopMilesCampaign.Image = node.Value;
node = node.Next;
shopMilesCampaign.Status = 1;
node = node.Next;
shopMileCampaigns.Add(shopMilesCampaign);
}
foreach (ShopAndMilesCampaigns shopMileCampaign in shopMileCampaigns)
{
shopMileCampaign.Insert();
}
}

I found the answer. Here it is to let you know.
If the XmlNodeType is equal to Element, then the loop continues to read from the XML data and looks for Whitesapces and end Element of XML tag. The below code gives me the exact value of XML tag even it is empty.
public LinkedList<string> AddToLinkedList(XmlReader reader)
{
LinkedList<string> linkedList = new LinkedList<string>();
try
{
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
reader.Read();
Start:
if (reader.NodeType == XmlNodeType.Whitespace || reader.NodeType == XmlNodeType.Element)
{
reader.Read();
goto Start;
}
else if (reader.NodeType == XmlNodeType.EndElement)
{
linkedList.AddLast("");
}
else
{
linkedList.AddLast(reader.Value);
}
break;
}
}
}