Saving Tree Structure using Serialization

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace HostApp
{    
    public partial class frmEditInfo : Form
    {
        #region User Defined variable
        string tagValue = String.Empty;
        string nameValue = String.Empty;
        #endregion
        #region user Defined Property
        public string TagValue
        {
            get { return tagValue; }
            set { tagValue = value; }
        }
        public string NameValue
        {
            get { return nameValue; }
            set { nameValue = value; }
        }
        #endregion
        public frmEditInfo()
        {
            InitializeComponent();
        }

        private void frmEditInfo_Load(object sender, EventArgs e)
        {
            txtname.Text = nameValue;
            txtTag.Text = tagValue;
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            nameValue = txtname.Text;
            tagValue = txtTag.Text;
            this.DialogResult = DialogResult.OK;
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.No;
        }
    }
}