Importing XMLNodes, Serialization

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using System.IO;

namespace ModifydummyNameS
{
    public class MakeSavedummyNameRequest
    {
        internal System.Xml.XmlDocument getdummyNameReq(string getdummyNameOut, string savedummyNameTemplate)
        {
            XmlDocument getdummyNameDoc = new XmlDocument();
            getdummyNameDoc.Load(getdummyNameOut);
            XmlNamespaceManager nsmgr = new XmlNamespaceManager(getdummyNameDoc.NameTable);
            
            
            
            
            nsmgr.AddNamespace("ns5", "http://dummyName3/Statistics/dummyName5/dummyName4/1");
          
            XmlElement root = getdummyNameDoc.DocumentElement;

            XmlNodeList dummyNameNodes = root.SelectNodes("//ns5:dummyName4", nsmgr);
            
            XmlDocument savedummyNameDocOut = new XmlDocument();
            
            
            XmlDocument savedummyNameDoc = new XmlDocument();
            savedummyNameDoc.Load(@"C:\Data\SmallTests\ModifydummyNameS\SavedummyNameTemplate.xml");
            XmlNamespaceManager saveNmgr = new XmlNamespaceManager(savedummyNameDoc.NameTable);
            saveNmgr.AddNamespace("m", "http://www.dummyName3/Statistics/dummyName5/dummyName2Service/1");
            
            XmlNode outAppendNode = savedummyNameDocOut.ImportNode(savedummyNameDoc.DocumentElement, true);
            XmlNode nextNodeInsert = savedummyNameDocOut.AppendChild(outAppendNode);
            foreach (XmlNode dummyNameNode in dummyNameNodes)
            {
                savedummyNameDoc = new XmlDocument();
                savedummyNameDoc.Load(@"C:\Data\SmallTests\ModifydummyNameS\SavedummyNameTemplate.xml");
                XmlNode callsNode = savedummyNameDoc.SelectSingleNode("/calls", saveNmgr);
                XmlNode callNode = savedummyNameDoc.SelectSingleNode("//call", saveNmgr);
                XmlNode insertPointNode = savedummyNameDoc.SelectSingleNode("//m:SavedummyName4Request", saveNmgr);
                dummyName2Service.dummyName4 dummyName = deserializedummyNameOut(dummyNameNode);
                if (dummyName.dummyName6 == null)
                {
                    dummyName.dummyName6 = "SAS" + dummyName.id.id + "~" + dummyName.id.version;
                    XmlDocument dummyNameDoc = new XmlDocument();
                    dummyNameDoc.LoadXml(serializedummyNameToString(dummyName));

                    XmlNode appendNode = savedummyNameDoc.ImportNode(dummyNameDoc.DocumentElement,true);
                    insertPointNode.AppendChild(appendNode);
                    XmlNode outNode = savedummyNameDocOut.ImportNode(callNode, true);
                    
                    nextNodeInsert.AppendChild(outNode);
                   
                    
                }
            }

            return savedummyNameDocOut;
        }

        private void serializedummyNameToFile(dummyName2Service.dummyName4 dummyName)
        {
            XmlSerializer ser = new XmlSerializer(typeof(dummyName2Service.dummyName4), "http://www.dummyName3/Statistics/dummyName5/dummyName4/1");
        TextWriter tw = new StreamWriter(@"C:\Data\SmallTests\ModifydummyNameS\dummyNameser.xml"); 
           ser.Serialize(tw,dummyName); 
           tw.Close(); 
      

        }
        private string serializedummyNameToString(dummyName2Service.dummyName4 dummyName)
        {
            XmlSerializer ser = new XmlSerializer(typeof(dummyName2Service.dummyName4), "http://www.dummyName3/Statistics/dummyName5/dummyName4/1");
            StringWriter sw = new StringWriter();

            ser.Serialize(sw, dummyName);
            return sw.ToString();


        }


        private dummyName2Service.dummyName4 deserializedummyNameOut(XmlNode dummyNameNode)
        {
            XmlSerializer ser = new XmlSerializer(typeof(dummyName2Service.dummyName4), "http://www.dummyName3/Statistics/dummyName5/dummyName4/1");
            return (dummyName2Service.dummyName4)ser.Deserialize(new XmlNodeReader(dummyNameNode)); 
        }
    }
}