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Reading XML in Asp.net not getting any results

I am using following code to read an XML file from this address.
XmlDocument xdoc = new XmlDocument();
xdoc.Load("https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml");
XmlNodeList nodeList = xdoc.DocumentElement.SelectNodes("//gesmes/Cube/Cube");
if (nodeList == null) lblOutput.Text = "node is null";
foreach (XmlNode node in nodeList)
{
XmlNode innerNode = node.SelectSingleNode(".//Cube");
lblOutput.Text = innerNode.Attributes["currency"].Value;
}
The problem is I don't get any thing. nodeList.Count always gives me 0.

You need to handle the namespaces correctly.
There are probably more then one way to handle them and this is one
XmlDocument xdoc = new XmlDocument();
xdoc.Load("https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml");
XmlNamespaceManager xnm = new XmlNamespaceManager(xdoc.NameTable);
xnm.AddNamespace("gesmes", "http://www.gesmes.org/xml/2002-08-01");
xnm.AddNamespace("eurofxref", "http://www.ecb.int/vocabulary/2002-08-01/eurofxref");
XmlNodeList nodeList = xdoc.DocumentElement.SelectNodes("//gesmes:Envelope/eurofxref:Cube/eurofxref:Cube", xnm);
if (nodeList == null)
{
var text = "node is null";
}
foreach (XmlNode node in nodeList)
{
XmlNode innerNode = node.SelectSingleNode(".//eurofxref:Cube", xnm);
var text = innerNode.Attributes["currency"].Value;
}

I don't know why it has to be this complicated but....
XmlDocument xdoc = new XmlDocument();
xdoc.Load("https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml");
XmlNamespaceManager xMan = new XmlNamespaceManager(xdoc.NameTable);
xMan.AddNamespace("def", "http://www.ecb.int/vocabulary/2002-08-01/eurofxref");
XmlNodeList nodeList = xdoc.DocumentElement.SelectNodes("//def:Cube", xMan);

How to get attribute xml without loop c#

i have xml file like this
> <?xml version='1.0' ?>
<config>
<app>
<app version="1.1.0" />
> </app>
</config>
and i want to read attribute version from node app
without any loop like this
while(reader.read()) or foreach etc.
Thanks

XmlDocument document = new XmlDocument();
document.Load("D:/source.xml");
XmlNode appVersion1 = document.SelectSingleNode("//app[#version]/#version");
XmlNode appVersion2 = document["config"]["app"]["app"].Attributes["version"];
Console.WriteLine("{0}, {1}",
appVersion1.Value,
appVersion2.Value);

You can do it this way.
XmlDocument doc = new XmlDocument();
string str = "<config><app><app version=" + "\"1.1.0\"" + "/></app></config>";
doc.LoadXml(str);
var nodes = doc.GetElementsByTagName("app");
foreach (XmlNode node in nodes)
{
if (node.Attributes["version"] != null)
{
string version = node.Attributes["version"].Value;
}
}
And you need to this for loop cause you got two nodes with same name App.
If you have a single node with name App,
XmlDocument doc = new XmlDocument();
string str = "<config><app version=" + "\"1.1.0\"" + "/></config>";
doc.LoadXml(str);
var node = doc.SelectSingleNode("//app");
if (node.Attributes["version"] != null)
{
string version = node.Attributes["version"].Value;
Console.WriteLine(version);
}

You can use linq to do
string stringXml= "yourXml Here";
XElement xdoc = XElement.Parse(stringXml);
var result= xdoc.Descendants("app").FirstOrDefault(x=> x.Attribute("version") != null).attribute("version").Value;
or:
var result = xdoc.Descendants("app").Where(x => x.Attribute("version") != null)
.Select(x => new { Version = x.Value });

Saving to xml file

I have a question about updating data in current xml file.
For example I want to change Radius to "50"
XML file:
<?xml version="1.0" encoding="utf-8"?>
<Settings>
<Radius>25</Radius>
<Length>40</Length>
<Height>15</Height>
<Name>Oks</Name>
</Settings>
I can read these settings with this code:
public void GetSettings()
{
XmlDocument xml = new XmlDocument();
xml.Load(location);
XmlNodeList xnList = xml.SelectNodes("/Settings");
foreach (XmlNode xn in xnList)
{
tb_height.Text = xn["Height"].InnerText;
tb_lenght.Text = xn["Length"].InnerText;
tb_radius.Text = xn["Radius"].InnerText;
tb_name.Text = xn["Name"].InnerText;
}
}

Not really sure what you are trying to do.
but to save your file, you can simply:
xml.Save(PathToSaveTo);

Got it working with
public void SaveSettings()
{
XmlDocument xml = new XmlDocument();
xml.Load(location);
XmlNodeList xnList = xml.SelectNodes("/Settings");
XmlNode xn = xml.SelectNodes("/Settings").Item(0);
xn["Height"].InnerText = tb_height.Text;
xn["Length"].InnerText = tb_lenght.Text;
xn["Radius"].InnerText = tb_radius.Text;
xn["Name"].InnerText = tb_name.Text;
xml.Save(location);
}

Get innertext from XML tags?

I am trying to populate an array with the inner text or value of a XML tag. I can loop though the nodes of the tag i am just having an issue pulling out the stored value.
I am looping though the child nodes of the Properties Tag, XML at bottom of Question.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("C://Users//Shaun//Documents//Visual Studio 2010//Projects//LightStoneTestService//LightStoneTestService//FileTest//Testdo.xml");
//XmlNodeList dataNodes = xmlDoc.SelectNodes("//Properties");
XmlNodeList oXMlNodeList = xmlDoc.GetElementsByTagName("Properties");
for (int Count = 0; Count < 27; Count++)
{
foreach (XmlNode node in oXMlNodeList)
{
int Max = node.ChildNodes.Count;
foreach (XmlNode childNode in node.ChildNodes) //For each child node in FieldData
{
if (ArrayProperties[Count].LightStoneTag == childNode.Name)
{
ArrayProperties[Count].Value = node.SelectSingleNode(ArrayProperties[Count].LightStoneTag).InnerText;
}
}
}
}
***** My Xml file looks as follows:
<NewDataSet>
<RequestData xmlns="RequestData">
<Req_ID>3204eba5-07f4-4e83-8b46-d89fa1d70bf6</Req_ID>
</RequestData>
<Properties xmlns="Properties">
<sr_id>19374324</sr_id>
<prop_id>9841107</prop_id>
<DEED_ID>21</DEED_ID>
<PROPTYPE_ID>2</PROPTYPE_ID>
<SS_ID>2315</SS_ID>
<NAD_ID>3048001</NAD_ID>
<property_type>SS</property_type>
<PROVINCE>GA</PROVINCE>
<MUNICNAME>CITY OF JOHANNESBURG</MUNICNAME>
<DEEDTOWN>ALLENS NEK</DEEDTOWN>
<SECTIONAL_TITLE>SS GREENHILLS</SECTIONAL_TITLE>
<UNIT>15</UNIT>
<TownShip>ALLENS NEK</TownShip>
<Purchase_Price>236500</Purchase_Price>
<Purchase_Date>20031020</Purchase_Date>
<Bond_Number>SB37369/2006</Bond_Number>
<Township_alt>ALLEN'S NEK EXT 32</Township_alt>
<RE>false</RE>
</Properties>
</NewDataSet>

It's the namespace issue. Add this portion of code before the for loop:
NameTable nt = new NameTable();
nt.Add("Properties");
XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);
nsmgr.AddNamespace("ns1", "Properties");
Change the line where you retrieve InnerText to:
ArrayProperties[Count].Value = node
.SelectSingleNode(
String.Concat("//ns1:", ArrayProperties[Count].LightStoneTag),
nsmgr)
.InnerText;

How to set attribute to an XML element using linq to xml in C#

i've an xml file like
<Root>
<Steps>
<Step Test="SampleTestOne" Status="Fail" />
<Step Test="SampleTestTwo" Status="Fail" />
</Steps>
</Root>
i need to change or overwrite the attribute value of "Status" in the Step element.
Now i'm using XmlDocument for this
like
XmlDocument XDoc = new XmlDocument();
XDoc.Load(Application.StartupPath + "\\Sample.xml");
XmlNodeList NodeList = XDoc.SelectNodes("//Steps/Step");
foreach (XmlNode Node in NodeList)
{
XmlElement Elem = (XmlElement)Node;
String sTemp = Elem.GetAttribute("Test");
if (sTemp == "SampleTestOne")
Elem.SetAttribute("Status", "Pass");
}
I need search the element and to update the status
is there any way to do this using XDocumentin c#
Thanks in advance

string filename = #"C:\Temp\demo.xml";
XDocument document = XDocument.Load(filename);
var stepOnes = document.Descendants("Step").Where(e => e.Attribute("Test").Value == "SampleTestOne");
foreach (XElement element in stepOnes)
{
if (element.Attribute("Status") != null)
element.Attribute("Status").Value = "Pass";
else
element.Add(new XAttribute("Status", "Pass"));
}
document.Save(filename);

You can use this code:
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(xmlFile);
XmlNode node = xmlDoc.SelectSingleNode("Root/Steps/Step");
node.Attributes["Status"].Value = "True";
xmlDoc.Save(xmlFile);