I have the following (simplified) notepad file, which from what I understand is XML text:
<?xml version="1.0" encoding="utf-8"?>
<appSettings>
<add key="Active_01" value="1">
</add>
</appSettings>
I am trying to parse it using C#.
So far I have the following:
public class RFIDScanner
{
public void GetScannerConfigFile()
{
string File = ConfigurationManager.AppSettings["RFIDScannerConfiguration"];
XmlDocument doc = new XmlDocument();
doc.Load(File);
XmlNode node = doc.DocumentElement.SelectSingleNode("/appSettings");
String nodename = node.Name;
}
}
So far I know this is all correct, as:
nodename = appSettings
Which is as it should be.
My problem is, how do I retrieve the value "1" from the field "Active_01".
I now know that the node "add" is a child of the node "appSettings", and a trying to work out how to get the value stored in it.
There are many ways, one is to use the XPath using the function you use above:
var value = doc.DocumentElement.SelectSingleNode("/appSettings/add/@value");
Another option is to use xml serialization :
You'd define classes as follows:
public class add
{
[XmlAttribute]
public string key;
[XmlAttribute]
public int value;
}
public class appSettings
{
public add add;
}
And then deserialize as follows:
var ser = new XmlSerializer(typeof(appSettings));
var xmlReader = new XmlTextReader(new StringReader(s));
appSettings settings = (appSettings) ser.Deserialize(xmlReader);
xmlReader.Close();
You can then get the values from settings
Not sure if you wish to parse the '1' from the key Active_01
, or get the 1
from the value. In Any case, you can use the following code:
public void GetScannerConfigFile()
{
string File = ConfigurationManager.AppSettings["RFIDScannerConfiguration"];
XmlDocument doc = new XmlDocument();
doc.Load(File);
var yourFile = doc.DocumentElement;
if (yourFile == null) return;
// Here you'll get the attribute key: key = Active_01 - which can be simply parsed for getting only the "1"
string key = yourFile.ChildNodes[0].Attributes["key"].Value;
// Here you'll get the number "1" from the value attribute.
string value = yourFile.ChildNodes[0].Attributes["value"].Value;
}
I have used this way in my code to add values to xml may be it will help
var surveyTypeList = new XElement("SurveyTypes");
foreach (var item in modelData.SurveyTypeList)
{
if (item.IsSelected)
{
var surveyType = new XElement("SurveyType");
var id = new XElement("Id");
id.Add(item.Value);
// **var i= id.Value**
surveyType.Add(id);
surveyTypeList.Add(surveyType);
}
}
you can get value by var i= id.Value in your code;
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