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Reading kml file to get coordinates in c#

Okay, so I've been working on reading in a kml file that contains the coordinates of the boundary of every county/city in America. However, I've ran into some problems. Particularly, how to get the value of the NextNode and what to do when there is another element tag in the middle of an element's value.
Here is what the kml file looks like:
<?xml version="1.0" encoding="utf-8" ?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document id="root_doc">
<Schema name="gadm36_USA_2" id="gadm36_USA_2">
<SimpleField name="NAME_0" type="string"></SimpleField>
<SimpleField name="NAME_1" type="string"></SimpleField>
<SimpleField name="NAME_2" type="string"></SimpleField>
</Schema>
<Folder><name>gadm36_USA_2</name>
<Placemark>
<Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fill></PolyStyle></Style>
<ExtendedData><SchemaData schemaUrl="#gadm36_USA_2">
<SimpleData name="NAME_0">United States</SimpleData>
<SimpleData name="NAME_1">Alabama</SimpleData>
<SimpleData name="NAME_2">Autauga</SimpleData>
</SchemaData></ExtendedData>
<MultiGeometry><Polygon><outerBoundaryIs><LinearRing><coordinates>-86.8189620971679,32.3402709960939 -86.8108367919922,32.3471298217775 -86.8097915649414,32.3535118103028 -86.8103485107422,32.3585205078126 -86.8158340454101,32.3703498840333 -86.8239974975586,32.3785285949708 -86.8310775756835,32.3839797973634 -86.83544921875,32.3912506103515 -86.8419876098633,32.3980712890626 -86.8452758789062,32.4044418334961 -86.8458633422851,32.4140090942383 -86.8447875976562,32.4167404174805 </coordinates></LinearRing></outerBoundaryIs></Polygon><Polygon><outerBoundaryIs><LinearRing><coordinates>-86.8426208496093,32.4181213378907 -86.8361129760742,32.4204101562501 -86.8296127319336,32.4227104187012 -86.8274383544922,32.4240798950195 -86.8263626098633,32.4259109497071 -86.8280029296875,32.4277305603028 -86.8307189941406,32.4295387268066 </coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>
</Placemark>
Note, this is not an actual example where these random element tags appear in the middle of the coordinates, the counties that have them typically have a massive coordinate list and from my experience if i go through the kml file and only use the values before the first element tags, it appears to map out the correct county boundaries
List<string> locationList = new List<string>();
var doc = XDocument.Load("gadm36_USA1.kml");
XNamespace ns = "http://www.opengis.net/kml/2.2";
var result = doc.Root.Descendants(ns + "Placemark");
foreach (XElement xmlInfo in result)
{
var region = xmlInfo.Element(ns + "ExtendedData").Element(ns + "SchemaData").Value;
//var country = region.Element(ns + "SimpleData").Value;
//var state = region.Element(ns + "SimpleData");
//var cityCounty = region.Element(ns + "SimpleData");
locationList = xmlInfo.Element(ns + "MultiGeometry").Value.Split(' ').ToList();
CountyCoordinates.Add(region, locationList);
}
So when i get to the variable "region", it groups all the element values together. For example it will say "United StatesAutaugaAlabama".
As for the coordinates, since there are these random element tags in the middle of the coordinate values, when i split the coordinates by " ", it gets screwed up when it hits these random element tags. (when it gets to that text in the middle of the coordinates the split will return '-86, 32 -86', instead of just '-86, 32') So, I'm essentially looking for help on how to read in the country, state, and county separately and how to properly read in the coordinates despite these random element tags.

I just tested with following a get results :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
XElement root = doc.Root;
XNamespace ns = root.GetDefaultNamespace();
List<XElement> simpleFields;
List<XElement> extendedDatas = doc.Descendants(ns + "ExtendedData").ToList();
foreach(XElement extendedData in extendedDatas)
{
simpleFields = extendedData.Descendants(ns + "SimpleData").ToList();
}
}
}
}

I think you meant:
List<XElement> extendedDatas = doc.Descendants(ns + "ExtendedData").ToList();
var a_docment = root.Element(ns + "Document").Value;
var result = doc.Root.Descendants(ns + "Placemark");
foreach (XElement xmlInfo in result)
{
List<string> locationList = new List<string>();
var gg = xmlInfo.Descendants(ns + "outerBoundaryIs").ToList();
foreach (XElement extendedData in gg)
{
locationList.AddRange(extendedData.Value.Split(' ').ToList());
}

Get variation from Amazon MWS XML product feed

I'm using the Amazon MWS C# Client library and I can successfully return an XML feed but I cannot seem to parse the Relationships elements whatsoever. This is the official Product API documentation
Here is the XML returned to me:
<Product>
<Identifiers>
<MarketplaceASIN>
<MarketplaceId>A1F83G8C2ARO7P</MarketplaceId>
<ASIN>B0769TXBK4</ASIN>
</MarketplaceASIN>
</Identifiers>
<AttributeSets>
<ns2:ItemAttributes xmlns:ns2="http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd" xml:lang="en-GB">
<ns2:Brand>Ambi Pur</ns2:Brand>
<ns2:Label>Ambi Pur</ns2:Label>
<ns2:Manufacturer>Ambi Pur</ns2:Manufacturer>
<ns2:NumberOfItems>1</ns2:NumberOfItems>
<ns2:PackageDimensions>
<ns2:Height Units="inches">2.5590551155</ns2:Height>
<ns2:Length Units="inches">6.6929133790</ns2:Length>
<ns2:Width Units="inches">4.5275590505</ns2:Width>
<ns2:Weight Units="pounds">0.2645547144</ns2:Weight>
</ns2:PackageDimensions>
<ns2:PackageQuantity>2</ns2:PackageQuantity>
<ns2:PartNumber>95535</ns2:PartNumber>
<ns2:ProductGroup>BISS Basic</ns2:ProductGroup>
<ns2:ProductTypeName>ADHESIVES_AND_SEALANTS</ns2:ProductTypeName>
<ns2:Publisher>Ambi Pur</ns2:Publisher>
<ns2:SmallImage>
<ns2:URL>http://ecx.images-amazon.com/images/I/41DhkI6B8oL._SL75_.jpg</ns2:URL>
<ns2:Height Units="pixels">75</ns2:Height>
<ns2:Width Units="pixels">75</ns2:Width>
</ns2:SmallImage>
<ns2:Studio>Ambi Pur</ns2:Studio>
<ns2:Title>Ambi Pur 3Volution Air Freshener - 1 Plug-In Diffuser (2 Packs)</ns2:Title>
</ns2:ItemAttributes>
</AttributeSets>
<Relationships>
<VariationParent xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
<Identifiers>
<MarketplaceASIN>
<MarketplaceId>A1F83G8C2ARO7P</MarketplaceId>
<ASIN>B076B1GP37</ASIN>
</MarketplaceASIN>
</Identifiers>
</VariationParent>
</Relationships>
<SalesRankings>
<SalesRank>
<ProductCategoryId>biss_basic_display_on_website</ProductCategoryId>
<Rank>1866</Rank>
</SalesRank>
<SalesRank>
<ProductCategoryId>301308031</ProductCategoryId>
<Rank>832</Rank>
</SalesRank>
</SalesRankings>
</Product>
Here is the code, the AttributeSets foreach works fine but I cannot seem to traverse the Relationships elements without getting 'Object reference not set to an instance of an object'.
ListMatchingProductsResponse lmpr = (ListMatchingProductsResponse)response;
foreach (var x in lmpr.ListMatchingProductsResult.Products.Product)
{
Console.WriteLine("ASIN: " + x.Identifiers.MarketplaceASIN.ASIN);
int i = 0;
SalesRankList rankings = x.SalesRankings;
List<SalesRankType> salesRankList = rankings.SalesRank;
foreach (SalesRankType saleRankings in salesRankList)
{
for (; i < 1; i++)
{
if (saleRankings.IsSetRank())
{
Console.WriteLine("Sales Rank: " + Convert.ToString(saleRankings.Rank));
}
}
}
foreach (var relationship in x.Relationships.Any)
{
string xml = ProductsUtil.FormatXml((System.Xml.XmlElement)relationship);
XElement element = XElement.Parse(xml);
XNamespace ns2 = "{http://mws.amazonservices.com/schema/Products/2011-10-01}";
// Errors here!
Console.WriteLine(element.Element(ns2 + "VariationParent").Element(ns2 + "Identifiers"));
}
foreach (var attribute in x.AttributeSets.Any)
{
string xml = ProductsUtil.FormatXml((System.Xml.XmlElement)attribute);
XElement element = XElement.Parse(xml);
XNamespace ns2 = "http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd";
Console.WriteLine("Title: " + element.Element(ns2 + "Title").Value);
Console.WriteLine("Title: " + element.Element(ns2 + "Title").Name);
Console.WriteLine("Pack Quantity: " + element.Element(ns2 + "PackageQuantity").Value);
if ((string)element.Element(ns2 + "ListPrice") != null)
{
Console.WriteLine("List Price:" + element.Element(ns2 + "ListPrice").Element(ns2 + "Amount").Value);
}
}
lstASIN.ASIN.Add(x.Identifiers.MarketplaceASIN.ASIN);
Console.WriteLine("");
}
}

Try following :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
XElement relationships = doc.Descendants("Relationships").FirstOrDefault();
XNamespace ns = "http://mws.amazonservices.com/schema/Products/2011-10-01";
string marketplaceId = (string)relationships.Descendants(ns + "MarketplaceId").FirstOrDefault();
}
}
}

This seems to work but still feels like unnecessary traversion.
RelationshipList rlist = x.Relationships;
if (rlist.IsSetAny())
{
foreach (var relationship in rlist.Any)
{
string xml = ProductsUtil.FormatXml((System.Xml.XmlElement)relationship);
XDocument xDoc = XDocument.Parse(xml);
XNamespace ns2 = "http://mws.amazonservices.com/schema/Products/2011-10-01";
IEnumerable<object> relationships = xDoc.Descendants();
foreach (System.Xml.Linq.XElement xe in relationships)
{
if (xe.Name == ns2 + "ASIN")
{
Console.WriteLine(xe.Value);
}
}
}
}

Reading XML with namespace and repeating nodes

I have the following XML:
<resource>
<description>TTT</description>
<title>TEST</title>
<entity xmlns="TdmBLRuPlUz.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="TdmBLRuPlUz.xsd TdmBLRuPlUz.xsd">
<UzdProd>
<row>
<F_DAUDZ>50</F_DAUDZ>
<BR_DAUDZ/>
<DAUDZ>50</DAUDZ>
<U_DAUDZ/>
<NKODS>ST2.0_014_023</NKODS>
</row>
</UzdProd>
<UzdMat>
<row>
<NKODS>SAG 2.0_014_150</NKODS>
<NNOSAUK>Sagatave 2.0mm*0.14*150m</NNOSAUK>
<PK_VIEN>1</PK_VIEN>
<DAUDZ>0.077</DAUDZ>
<F_DAUDZ>0.077</F_DAUDZ>
</row>
</UzdMat>
</entity>
</resource>
And this is my C# code:
XNamespace ns = "TdmBLRuPlUz.xsd";
XDocument doc = XDocument.Parse(xml);
foreach (XElement element in doc.Descendants(ns + "row"))
{
Console.WriteLine(element.Element(ns + "NKODS").Value);
string NKODS = element.Element(ns + "NKODS").Value;
string F_DAUDZ = element.Element(ns + "F_DAUDZ").Value;
string DAUDZ = element.Element(ns + "DAUDZ").Value;
}
What I need is to read values from the XML nodes NKODS, F_DAUDZ and DAUDZ.
The problem is that there are repeating nodes with those names and with this code it gives me the last ones which are under UzdMat node. What would be the way to get the values for these nodes under UzdProd?
I tried to change row to UzdProd, but that didn't work.

You need to read the specific row you want rather than looping through all of them. For example:
var prodRow = doc.Descendants(ns + "UzdProd").Elements(ns + "row").Single();
var matRow = doc.Descendants(ns + "UzdMat").Elements(ns + "row").Single();
var prodNkods = (string) prodRow.Element(ns + "NKODS");
var matNkods = (string) matRow.Element(ns + "NKODS");
See this fiddle for a working demo.

See if this works :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication25
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
XElement entity = doc.Descendants().Where(x => x.Name.LocalName == "entity").FirstOrDefault();
XNamespace ns = entity.GetDefaultNamespace();
var results = entity.Elements().Select(x => new {
uzd = x.Name.LocalName,
dict = x.Descendants(ns + "row").Elements().GroupBy(y => y.Name.LocalName, z => (string)z)
.ToDictionary(y => y.Key, z => z.FirstOrDefault())
}).ToList();
}
}
}

Getting Values from XML

I have an XML File that is filled with values that look like :
<property name ="Web Application" value="\Fxnet2\Web\webpl\" />
<property name="Web Service" value="\FXnet2\Web\FXnet_SC_WS\" />
For each line i would like to import the name into one string (Lets call it serviceName) and the value in a different one (Lets call it servicePath)
I got around 250 lines of the sort in the xml , is it possible to do it in the current xml format? and if it does how ? , or should i change the format of my list?
Thanks in advance .

You can get all nodes and access their attributes in a loop. In the example below I'm adding the values of both attributes to 2 different arrays that you can easily manipulate later.
XmlDocument doc = new XmlDocument();
doc.Load("yourfile.xml");
XmlNodeList usernodes = doc.SelectNodes("//property");
//Declare arrays
List<string> serviceName = new List<string>();
List<string> servicePath = new List<string>();
//iterate through all elements found
foreach (XmlNode usernode in usernodes)
{
serviceName.Add(usernode.Attributes["name"].Value);
serviceName.Add(usernode.Attributes["value"].Value);
}

Managed to Do it in the end
static void Main(string[] args)
{
List<Service> services;
using(StreamReader file = File.OpenText("c:\\projects.xml"))
{
XDocument doc = XDocument.Load(file);
services = (from node in doc.Root.Elements("property")
select new Service
{
serviceName = node.Attribute("name").Value,
servicePath = node.Attribute("value").Value,
dllFiles = System.IO.Directory.GetFiles( "servicePath", "*.dll" ),
}).ToList<Service>();
}

Using XML Linq
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string input =
"<Root>" +
"<property name =\"Web Application\" value=\"\\Fxnet2\\Web\\webpl\" />" +
"<property name=\"Web Service\" value=\"\\FXnet2\\Web\\FXnet_SC_WS\" />" +
"</Root>";
XElement root = XElement.Parse(input);
var results = root.Descendants("property").Select(x => new {
name = x.Attribute("name").Value,
value = x.Attribute("value").Value
}).ToList();
}
}
}
​

Failing To Parse the XML File in C#

I am a c++ developer and I started working on a C# WPF project. I have a method which should read the xml file. In my c++ application I could do it very efficiently but in WPF I am not sure how to approach the problem. Let me show you my code:
// When Browse Button is clicked this method is called
private void ExecuteScriptFileDialog()
{
var dialog = new OpenFileDialog { InitialDirectory = _defaultPath };
dialog.DefaultExt = ".xml";
dialog.Filter = "XML Files (*.xml)|*.xml";
dialog.ShowDialog();
ScriptPath = dialog.FileName; //ScriptPath contains the Path of the Xml File
if (File.Exists(ScriptPath))
{
LoadAardvarkScript(ScriptPath);
}
}
public void LoadAardvarkScript(string ScriptPath)
{
// I should read the xml file
}
I had achieved in C++ as follows:
File file = m_selectScript->getCurrentFile(); //m_selectScript is combobox name
if(file.exists())
{
LoadAardvarkScript(file);
}
void LoadAardvarkScript(File file)
{
XmlDocument xmlDoc(file);
//Get the main xml element
XmlElement *mainElement = xmlDoc.getDocumentElement();
XmlElement *childElement = NULL;
XmlElement *e = NULL;
int index = 0;
if(!mainElement )
{
//Not a valid XML file.
return ;
}
//Reading configurations...
if(mainElement->hasTagName("aardvark"))
{
forEachXmlChildElement (*mainElement, childElement)
{
//Read Board Name
if (childElement->hasTagName ("i2c_write"))
{
// Some code
}
}
}
How can I get the tagname of both mainElement and childelem as done in my c++ code? :)

not knowing the layout of your xml file here is an example that you can use if you know how to use Linq
class Program
{
static void Main(string[] args)
{
XElement main = XElement.Load(#"users.xml");
var results = main.Descendants("User")
.Descendants("Name")
.Where(e => e.Value == "John Doe")
.Select(e => e.Parent)
.Descendants("test")
.Select(e => new { date = e.Descendants("Date").FirstOrDefault().Value, points = e.Descendants("points").FirstOrDefault().Value });
foreach (var result in results)
Console.WriteLine("{0}, {1}", result.date, result.points);
Console.ReadLine();
}
}
you could also use XPATH as well to parse xml file.. but would really need to see the xml file layout
if you want to do it using xmlreader
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
namespace XmlReading
{
class Program
{
static void Main(string[] args)
{
//Create an instance of the XmlTextReader and call Read method to read the file
XmlTextReader textReader = new XmlTextReader("C:\\myxml.xml");
textReader.Read();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(textReader);
XmlNodeList BCode = xmlDoc.GetElementsByTagName("Brandcode");
XmlNodeList BName = xmlDoc.GetElementsByTagName("Brandname");
for (int i = 0; i < BCode.Count; i++)
{
if (BCode[i].InnerText == "001")
Console.WriteLine(BName[i].InnerText);
}
Console.ReadLine();
}
}
}

Use LINQ queries to extract data from xml (XDocument)
Refer this link for further insights on XLinq.
Sample XML :
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<People>
<Person id="1">
<Name>Joe</Name>
<Age>35</Age>
<Job>Manager</Job>
</Person>
<Person id="2">
<Name>Jason</Name>
<Age>18</Age>
<Job>Software Engineer</Job>
</Person>
</People>
Sample Linq query:
var names = (from person in Xdocument.Load("People.xml").Descendants("Person")
where int.Parse(person.Element("Age").Value) < 30
select person.Element("Name").Value).ToList();
Names will be list of string. This query will return Jason as he is 18 yrs old.

Using Linq2Xml,
var xDoc = XDocument.Load("myfile.xml");
var result = xDoc.Descendants("i2c_write")
.Select(x => new
{
Addr = x.Attribute("addr").Value,
Count = x.Attribute("count").Value,
Radix = x.Attribute("radix").Value,
Value = x.Value,
Sleep = ((XElement)x.NextNode).Attribute("ms").Value
})
.ToList();
var khz = xDoc.Root.Element("i2c_bitrate").Attribute("khz").Value;