Get Parent Node using Child node value in XML using C# .Net

I have tried this code and its giving me correct Country Id if i pass ITT and IDP.

This is your XML file

FormsConfig.xml

<?xml version="1.0" encoding="utf-8" ?>

<Countries>
    <Country id="0">
        <!-- AUSTRALIA -->
        <Label1>ABN</Label1>
        <TextBoxLimit1>14</TextBoxLimit1>
        <Label2>ACN</Label2>
        <TextBoxLimit2>14</TextBoxLimit2>
    </Country>
    <Country id="1">
        <!-- PAKISTAN -->
        <Label1>NTN</Label1>
        <TextBoxLimit1>20</TextBoxLimit1>
        <Label2>BNN</Label2>
        <TextBoxLimit2>22</TextBoxLimit2>
    </Country>
    <Country id="2">
        <!-- SAUDIA ARABIA -->
        <Label1>STT</Label1>
        <TextBoxLimit1>18</TextBoxLimit1>
        <Label2>SDP</Label2>
        <TextBoxLimit2>24</TextBoxLimit2>
    </Country>
    <Country id="3">
        <!-- INDIA -->
        <Label1>ITT</Label1>
        <TextBoxLimit1>28</TextBoxLimit1>
        <Label2>IDP</Label2>
        <TextBoxLimit2>20</TextBoxLimit2>
    </Country>

</Countries>

Namespaces

using System.Xml;

protected void Page_Load(object sender, EventArgs e)
{
    string countryId = this.GetCountryId("ITT", "IDP");
}

public string GetCountryId(string categoryName, string categoryName2)
{
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load(Server.MapPath("FormsConfig.xml"));
    XmlElement root = xmlDoc.DocumentElement;
    XmlNodeList nodes = root.SelectNodes("Country");
    string parentName = string.Empty;
    foreach (XmlNode node in nodes)
    {
        for (int i = 0; i < node.ChildNodes.Count; i++)
        {
            string label1 = node.ChildNodes[1].InnerXml;
            string label2 = node.ChildNodes[3].InnerXml;
            if (label1 == "ITT" && label2 == "IDP")
            {
                parentName = node.Attributes["id"].Value;
                break;
            }
        }
    }
    return parentName;
}