Understanding Section Handlers - App.config File

using System;
using System.Configuration;
using System.Xml;

namespace ConfigSections
{
	/// <summary>
	/// MyConfigHandler - Implements IConfigurationSectionHandler.
	/// This handler used to handle the companyAddress section of app.config
	/// </summary>
	public class MyConfigHandler:IConfigurationSectionHandler
	{
		public MyConfigHandler()	{	}

		#region IConfigurationSectionHandler Members

		//This is the only function defined in the interface IConfigurationSectionHandler
		public object Create(object parent, object configContext, System.Xml.XmlNode section)
		{
			 /* Parameter section will have all information about companyAddress,
			  * parst it and assign the values to CCompanyAddr object
			 */			
			CCompanyAddr objCompany=new CCompanyAddr();
			objCompany.CompanyName = section.SelectSingleNode("companyName").InnerText;
			objCompany.DoorNo = section.SelectSingleNode("doorNo").InnerText;
			objCompany.Street = section.SelectSingleNode("street").InnerText;
			objCompany.City = section.SelectSingleNode("city").InnerText;
			objCompany.PostalCode = Convert.ToInt64(section.SelectSingleNode("postalCode").InnerText);
			objCompany.Country = section.SelectSingleNode("country").InnerText;

			return objCompany;
		}

		#endregion
	}


	//CompanyAddress Class
	/// <summary>
	/// This is simple class to maintain the company address.
	/// I am using this class in MyConfigHandler
	/// </summary>
	public class CCompanyAddr
	{
		#region private variables
		private string _CompanyName;
		private string _DoorNo;
        private string _Street;
		private string _City;
		private long _PostalCode;
		private string _Country;
#endregion

		public CCompanyAddr()
		{
			_CompanyName=_DoorNo=_City=_Street=_Country="";
			_PostalCode=0;
		}
		#region Properties

		public string CompanyName
		{
			get{
				return _CompanyName;
			}
			set{
				_CompanyName = value;
			}
		}
		public string DoorNo
		{
			get{
				return _DoorNo;
			}
			set{
				_DoorNo = value;
			}
		}

		public string Street
		{
			get{
				return _Street;
			}
			set{
				_Street = value;
			}
		}

		public string City
		{
			get{
				return _City;
			}
			set{
				_City = value;
			}
		}

		public long PostalCode
		{
			get{
				return _PostalCode;
			}
			set{
				_PostalCode = value;
			}
		}

		public string Country
		{
			get{
				return _Country;
			}
			set{
				_Country = value;
			}
		}
		#endregion
	}
}