Change the InfoPath Field Value using Console Application

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Office.InfoPath.Server;
using Microsoft.Office;
using System.Data;
using Microsoft.Office.Interop.InfoPath.Xml;
using Microsoft.Office.Interop;
using Microsoft.Office.Interop.InfoPath;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
           
            Application myApp = new Microsoft.Office.Interop.InfoPath.Application();
            XDocumentsCollection myXDocs = myApp.XDocuments;
            XDocument myXDoc = myXDocs.Open("C:\\Test\\Form1.xml",
               (int)XdDocumentVersionMode.xdFailOnVersionOlder);

            IXMLDOMDocument2 myXMLDoc = myXDoc.DOM as IXMLDOMDocument2;

            myXMLDoc.setProperty("SelectionNamespaces",
                "xmlns:my='http://schemas.microsoft.com/office/infopath/2003/myXSD/2011-08-18T14:11:04'");

            IXMLDOMNodeList myNames =
               myXMLDoc.selectNodes(
               "//my:customerName[. = 'Company A']");

            if (myNames.length < 1)
                Console.WriteLine(
                   "No elements containing 'Company A' were found.");

          
            IXMLDOMNode myName = myNames.nextNode();

            while (myName != null)
            {
                myName.text = "Company B";
                myName = myNames.nextNode();

            }

            myXDoc.SaveAs("C:\\Test\\Form2.xml");
            myXDocs.Close(0);
            myApp.Quit(false);
            Console.WriteLine("Finished!");
        }
    }
}

Reference Link: Automate Changing the Value of a Field