How To Select an XML Node Element Values According to a Specific Attribute Value - C#,VB.NET

Select XML Node Element Values According to a Specific Attribute Value:This article explains how to select individual XML element value from an XML file according to a specific attribute value using XPath expression.

Consider the XML file below,


<!--?xml version="1.0" encoding="utf-8"?-->
<Employee>
  <Name>Sam</Name>
  <DOB>10/10/1960</DOB>
  <Name>Peter</Name>
  <DOB>10/10/1980</DOB>
  <Name>Thomas</Name>
  <DOB>10/01/1970</DOB>
</Employee>

Below samples will help you for accessing the Employee node’s internal elements according to the ID attribute provided.The XPath expression “/Employees/Employee[@ID=’E002′]” is used to fetch the Elements inside Employee element node whose ID attribute value is EOO2

C#.NET Code – Select XML Node Element Values According to a Specific Attribute Value

class Program
{
    static void Main(string[] args)
    {
         XmlDocument xmlDoc = new XmlDocument();

         //Hardcoded path is the xml file path.Set it to your xml file path.
         xmlDoc.Load(@"E:\Demos\XmlParsersUnleashed\XmlParsersUnleashed\Employees.xml");
         GetSingleNodeByAttributeValue(xmlDoc);
     }

    /// <summary>
    /// Performs the parsing and displys the element values
    /// </summary>
    private static void GetSingleNodeByAttributeValue(XmlDocument xmlDoc)
    {
          //execute the xpath expression "/Employees/Employee[@ID='E002']" which selects
          //the Employee element with attribute ID's value 'E002'
          XmlNode employeeNode = xmlDoc.SelectSingleNode("/Employees/Employee[@ID='E002']");
          Console.WriteLine("Name :" + employeeNode["Name"].InnerText);
          Console.WriteLine("Date of Birth :" + employeeNode["DOB"].InnerText);
          Console.Read();
    }
}

VB.NET Code – Select XML Node Element Values According to a Specific Attribute Value

Class Program

     Private Shared Sub Main(args As String())

          Dim xmlDoc As New XmlDocument()

          'Hardcoded path is the xml file path.Set it to your xml file path.
           xmlDoc.Load("E:\Demos\XmlParsersUnleashed\XmlParsersUnleashed\Employees.xml")
          
           GetSingleNodeByAttributeValue(xmlDoc)

      End Sub

     ''' <summary>
     ''' Performs the parsing and displys the element values
     ''' </summary>
     Private Shared Sub GetSingleNodeByAttributeValue(xmlDoc As XmlDocument)
           'execute the xpath expression "/Employees/Employee[@ID='E002']" which selects
           'the Employee element with attribute ID's value 'E002'
           Dim employeeNode As XmlNode = xmlDoc.SelectSingleNode("/Employees/Employee[@ID='E002']")

           Console.WriteLine("Name :" + employeeNode("Name").InnerText)
           Console.WriteLine("Date of Birth :" + employeeNode("DOB").InnerText)
           Console.Read()
    End Sub
End Class

How To Select an XML Node Element Values According to a Specific Attribute Value – C#,VB.NET

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