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Iterate through sub child node in xml using C#

MY config.xml
<?xml version="1.0" standalone="yes"?>
<Config>
<GetPollingIndexDetails>
<NoRunDays>Sunday,Sunday</NoRunDays>
<Times>07:00</Times>
<Friday>Friday</Friday>
<ServiceTimerInterval>1</ServiceTimerInterval>
<RequestValueUserName>test</RequestValueUserName>
<RequestValuePassword>test</RequestValuePassword>
<NASPATH_LOC>
<NASPATH>
<NASPath>D:\NSEFiles</NASPath>
<NASUserId>abc</NASUserId>
<UserDomain>abc</UserDomain>
<NASUserPwd>abc</NASUserPwd>
<LoginType>9</LoginType>
<FileNamePattern>NCDEX_INDEX_ddMMyyyy[0-9]{6}_[0-9]{2}$</FileNamePattern>
</NASPATH>
<NASPATH>
<NASPath>D:\NSEFiles</NASPath>
<NASUserId>abc</NASUserId>
<UserDomain>abc</UserDomain>
<NASUserPwd>abc</NASUserPwd>
<LoginType>9</LoginType>
<FileNamePattern>NCDEX_INDEX_ddMMyyyy[0-9]{6}_[0-9]{2}$</FileNamePattern>
</NASPATH>
</NASPATH_LOC>
<MailFrom>nse_dev#ncdex.com</MailFrom>
<EmailToExtranet>nse_dev#ncdex.com</EmailToExtranet>
</GetPollingIndexDetails>
<FUTINDEX>
<INDEX>FUTXX</INDEX>
<DisplayName>NCDEX </DisplayName>
</FUTINDEX>
</Config>
I am trying to iterate through nodes under NASPATH_LOC for each NASPATH but struggling to even get to the first node. but I am not able to get a parent node too . it is giving null value in return. any kind of help will be grateful.
_xmlConfigPath = Convert.ToString(ConfigurationManager.AppSettings["ConfigXML"]);
XmlDocument xmlNasNode = new XmlDocument(); //added for test
xmlNasNode.Load(_xmlConfigPath);
XmlNodeList xnList = xmlNasNode.SelectNodes("/GetPollingIndexDetails/NASPATH_LOC/NASPATH");
foreach (XmlNode xn in xnList);
{
string NASPath = logwritter.GetMessage("//GetPollingIndexDetails/NASPATH_LOC/NASPATH/NASPath", _xmlConfigPath);
string NASUserId = logwritter.GetMessage("//GetPollingIndexDetails/NASPATH_LOC/NASPATH/NASUserId", _xmlConfigPath);
string UserDomain = logwritter.GetMessage("//GetPollingIndexDetails/NASPATH_LOC/NASPATH/UserDomain", _xmlConfigPath);
string NASUserPwd = logwritter.GetMessage("//GetPollingIndexDetails/NASPATH_LOC/NASPATH/NASUserPwd", _xmlConfigPath);
int LoginType = Convert.ToInt32(logwritter.GetMessage("//GetPollingIndexDetails/NASPATH_LOC/NASPATH/LoginType", _xmlConfigPath));
}

C# - Unable to get node value from xml file

I'm trying to get the inner text from a node after loading the XML file.
I have tried this code with another file and it worked. But here I can't get the node values.
Can anyone point out what am I doing wrong?
XML file - restaurant_reviews.xml
<?xml version="1.0"?>
<restaurants xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.algonquincollege.com/onlineservice/reviews">
<restaurant>
<name>Laughing Man</name>
<logo>
<name>Visit the Laughing Man</name>
<imagefile>laughing-man.gif</imagefile>
<width unit="px">50</width>
<height unit="px">200</height>
</logo>
</restaurant>
<restaurant>
<name>Gong’s Asian Cuisine</name>
<logo>
<name/>
<imagefile>gong-asian-cuisine.gif</imagefile>
<width unit="px">150</width>
<height unit="px">250</height>
</logo>
</restaurant>
</restaurants>
C# Code
List<string> names = new List<string>();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(HttpContext.Current.Server.MapPath(#"~/App_Data/restaurant_reviews.xml"));
XmlNodeList nodes = xmlDoc.SelectNodes("/restaurants/restaurant");
foreach (XmlNode itemNode in nodes)
{
XmlNode titleNode = itemNode.SelectSingleNode("name");
if (titleNode != null)
{
names.Add(titleNode.InnerText);
}
}

Whilst this question already has an accepted answer, I wanted to add this anyway, as removing namespaces and manipulating XML in this way doesn't feel right to me, it was added for a reason I suspect.
What I believe is the correct approach is too add an XML Namespace Manager to your XPath query.
var nsMgr = new XmlNamespaceManager(xmlDoc.NameTable);
nsMgr.AddNamespace("r", "http://www.algonquincollege.com/onlineservice/reviews");
Then in your SelectNodes and SelectSingleNodes, you add the namespace to the query and pass in the manager, like so.
XmlNodeList nodes = xmlDoc.SelectNodes("/r:restaurants/r:restaurant", nsMgr);
and
XmlNode titleNode = itemNode.SelectSingleNode("r:name", nsMgr);
But if you're happy with the other solution and can manipulate it in this way then go for it I guess.

If you remove this xmlns="http://www.algonquincollege.com/onlineservice/reviews" in your xml it works. I don't know why but the xmlDoc.SelectNodes("/restaurants/restaurant"); do not find any nodes with this xmlns namespace.
This is the code I worked with and it works:
string xml = #"<?xml version=""1.0""?>
<restaurants xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema"">
<restaurant>
<name>Laughing Man</name>
<logo>
<name>Visit the Laughing Man</name>
<imagefile>laughing-man.gif</imagefile>
<width unit=""px"">50</width>
<height unit=""px"">200</height>
</logo>
</restaurant>
<restaurant>
<name>Gong’s Asian Cuisine</name>
<logo>
<name/>
<imagefile>gong-asian-cuisine.gif</imagefile>
<width unit=""px"">150</width>
<height unit=""px"">250</height>
</logo>
</restaurant>
</restaurants>";
List<string> names = new List<string>();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
XmlNodeList nodes = xmlDoc.SelectNodes("/restaurants/restaurant");
foreach (XmlNode itemNode in nodes)
{
XmlNode titleNode = itemNode.SelectSingleNode("name");
if (titleNode != null)
{
names.Add(titleNode.InnerText);
}
}

The problem was with namespace. Thanks to #Sean in the comment section I have resolved the issue. Thanks to #Presi also for pointing out the namespace attribute was the problem.
List<string> names = new List<string>();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(HttpContext.Current.Server.MapPath(#"~/App_Data/restaurant_reviews.xml"));
var namespaceName = "ns";
var namespacePrefix = string.Empty;
XmlNamespaceManager nameSpaceManager = null;
if (xmlDoc.LastChild.Attributes != null)
{
var xmlns = xmlDoc.LastChild.Attributes["xmlns"];
if (xmlns != null)
{
nameSpaceManager = new XmlNamespaceManager(xmlDoc.NameTable);
nameSpaceManager.AddNamespace(namespaceName, xmlns.Value);
namespacePrefix = namespaceName + ":";
}
}
XmlNodeList nodes = xmlDoc.SelectNodes(string.Format("/{0}restaurants/{0}restaurant", namespacePrefix), nameSpaceManager);
foreach (XmlNode itemNode in nodes)
{
XmlNode titleNode = itemNode.SelectSingleNode(namespacePrefix + "name", nameSpaceManager);
if (titleNode != null)
{
names.Add(titleNode.InnerText);
}
}

Read particular xml node using condition c#

I want to read particular node in XML like if any "Log"(root node) node contain "Message" node the it should read all the node under the "Log" node.
Note : Log node is root node and there are many node under "log" node.
for Example :
<TestLogDataSet>
<Log>
<Assembly>TestCase</Assembly>
<TestMethod>Application</TestMethod>
<Status>Passed</Status>
<Trace />
</Log>
<Log>
<Assembly>TestCase</Assembly>
<TestMethod>Application</TestMethod>
<Status>Failed</Status>
<Message>
<pre><![CDATA[ Error while deleting the Project]]>
</pre>
</Message>
<Trace />
</Log>
</TestLogDataSet>
Code :
string xmlFile = File.ReadAllText(#"D:\demo.xml");
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xmlFile);
foreach (XmlNode lognode in xmlDoc.SelectNodes("/TestLogDataSet/Log[Message]"))
{
foreach (XmlNode node in lognode.ChildNodes)
{
string n1 = node.InnerText;
textBox1.Text = n1 + "\r\n";
}
}

You can use XPath for this.
StringBuilder nodeText = new StringBuilder();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(<your xml here>);
foreach (XmlNode lognode in xmlDoc.SelectNodes("/TestLogDataSet/Log[Message]")) //select all log nodes with Message as child tag
{
string status = lognode.SelectSingleNode("./Status").InnerText;
if (!string.Equals(status,"failed",StringComparison.OrdinalIgnoreCase))
{
continue;
}
foreach (XmlNode node in lognode.ChildNodes)
{
nodeText.Append(node.LocalName);
nodeText.Append(":");
nodeText.Append(node.InnerText);//read inner text of node here
nodeText.Append("\n");
}
}
Console.WriteLine(nodeText.ToString());

If you want the Log nodes then this should suffice:
var nodes =
xd
.Root
.Elements("Log")
.Where(x => x.Element("Message") != null);
That gives:
If you want a list of all of the child nodes (which is what I understand you want from your question, but it seems a bit odd) then this works:
var nodes =
xd
.Root
.Elements("Log")
.Where(x => x.Element("Message") != null)
.SelectMany(x => x.Elements());
This gives:

C# how to create a custom xml document

I'm really just trying to create a custom xml document for simple configuration processing.
XmlDocument xDoc = new XmlDocument();
string[] NodeArray = { "Fruits|Fruit", "Vegetables|Veggie"};
foreach (string node in NodeArray)
{
XmlNode xmlNode = xDoc.CreateNode(XmlNodeType.Element,node.Split('|')[0],null);
//xmlNode.Value = node.Split('|')[0];
xmlNode.InnerText = node.Split('|')[1];
xDoc.DocumentElement.AppendChild(xmlNode);
}
What i'm trying to get is this.
<?xml version="1.0" encoding="ISO-8859-1"?>
<Fruits>Fruit</Fruits>
<Vegetables>Veggie</Vegetables>
i get not set to value of an object at xDoc.DocumentElement.AppendChild(xmlNode);

Unfortunately, You can't make that XML structure.
All XML documents must have a single root node. You can't have more.
Try something like this
XmlDocument xDoc = new XmlDocument();
xDoc.AppendChild( xDoc.CreateElement("root"));
string[] NodeArray = { "Fruits|Fruit", "Vegetables|Veggie" };
foreach (string node in NodeArray)
{
XmlNode xmlNode = xDoc.CreateNode(XmlNodeType.Element, node.Split('|')[0], null);
//xmlNode.Value = node.Split('|')[0];
xmlNode.InnerText = node.Split('|')[1];
xDoc.DocumentElement.AppendChild(xmlNode);
}

It is not possible to have that XML structure as XML MUST have a single root element. You may want to try:
<?xml version="1.0" encoding="ISO-8859-1"?>
<items>
<Fruits>Fruit</Fruits>
<Vegetables>Veggie</Vegetables>
</items>

How to get element value using c#

XML file:
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<content>
<FingerPrintUserDetails>
<UserID>e57645</UserID>
<UserName>Jill</UserName>
<FPData>AQAAABQAAAD0AAAAAQASAAEAWgAAAAAA8AAAAHfrWpB6BHZBL10voxpdxu2Km5XVNh*oUNC80Rvpql3RhlqOiBPeet6iRPwb/BdN1fCF4Y/WHbQ40*mqoUKqilgN7bUqNuXP7M299HUWtoAGEO3nDKXXAnHd7dgytZbmHVv*mRBPJDSRw9VY/R1yOIu2cCDlLM*F8Q1lvTfMFDdfwNZynI0e2ZauCF58f0UX56XLFBallaAauxP5mvvhUmcmc6ITg7RhH9wc4181kgPjCuZg38pQepE5U07XIa3hQP8fwxPzdprifXECgB1Z3pTXWQP0q4ZD0Inlbq6Gszo1ucPrhQA0jYQRXtJUVuyBeg</FPData>
<Address>Pune</Address>
<ContactNo>848488484884</ContactNo>
</FingerPrintUserDetails>
<FingerPrintUserDetails>
<UserID>444</UserID>
<UserName>John</UserName>
<FPData>AQAAABQAAADkAAAAAQASAAEAZAAAAAAA4AAAAPLnmQ8FymAAHWYutR5pdtYvfDVmjsqLeli8tOSTFAtw6AkfA0r8XwrMzp9jFZJI7DlBk4G94BMq55gPEG7uBLZUNYrvhv0jDlDFMOjWGJ9RoWekFveTC*oZ7Tq/xmxuvY6FzLHVo*xzdKQI73Y0f9/eeMC0OgqnbQ3I0IP6cTkkKnTUZJOXKr7IFPHkjJAvCDmU7ec4vG50JHdBJIObmbzVcO0huTUQyE7CR1qYkUjmNFKgVKWPLRupEk4l/Ek0BuAba*9JlhBVUHzZuKbDQLc9lTFwevAgDuuAwxfZaLS*</FPData>
<Address>nagpur</Address>
<ContactNo>464645763</ContactNo>
</FingerPrintUserDetails>
<FingerPrintUserDetails>
<UserID>5555</UserID>
<UserName>Jack</UserName>
<FPData>AQAAABQAAAAEAQAAAQASAAEAZAAAAAAA9AAAAPz5mQO3uTeXLfU5Mb74XbCX5rERGZFPQMVG1vPpX87306O5oURlYiIe5dasJ2S8NlBZu2UU3zaUpNnB7viYDB6*wfFlgtopn/WdbXW0Yhik3hj8nDreEmaK12To8qfAJx2ooq43i0wBIL*0Jkba*QpHIprSajrhnCg1PjOLMP37sEauJUwXJaoDR/PPQYIxTFE5kf8xzGlJmqiGejD*Y8R3ewU9yIrxkdQ0S//LCdacULt2QvS/I3APo/j0FAgSCOU3SBLdDL6UBPD4fLeEzo7uUIW8gUMThzZX*u2iUuNwJdqWC2NsFtWkUWt03sz3xYQpR8pLA4vrsUmldzUMWe8</FPData>
<Address>beed</Address>
<ContactNo>5745745747</ContactNo>
</FingerPrintUserDetails>
</content>
C#:
XmlDocument doc = new XmlDocument();
doc.Load("E://BioEnable_Project//fp_project_using_xml//fp_project_using_xml//Capture_Data.xml");
XmlElement root = doc.DocumentElement;
XmlNodeList nodes = root.SelectNodes("FPData");
foreach(XmlElement node in nodes)
{
MessageBox.Show(node.Value);
}
I have to check FPData value on each node..i use above code but not getting..

In your XPath, provide the full path to the node.
XmlNodeList nodes = root.SelectNodes("/content/FingerPrintUserDetails/FPData");
What is happening is that there is no direct FPData node under the document root.

XmlNodeList nodes = root.SelectNodes("content/FingerPrintUserDetails");
it will return array of FingerPrintUserDetails, then find FPData in them
XmlNodeList res = nodes[index].SelectNodes("FPData");

Using LINQ to XML:
XDocument doc = XDocument.Load("XmlFilePath");
var selectors = from elements in doc.Elements("content").Elements("FingerPrintUserDetails")
select elements;
foreach (var element in selectors)
{
MessageBox.Show(element.Element("FPData").Value);
}

XmlDocument doc = new XmlDocument();
doc.Load("E://BioEnable_Project//fp_project_using_xml//fp_project_using_xml//Capture_Data.xml");
XmlNodeList lst = doc.GetElementsByTagName("FingerPrintUserDetails");
foreach (XmlElement elem in lst)
{
XmlNode pfData = doc.GetElementsByTagName("FPData")[0];
MessageBox.Show(pfData.Value);
}