create BaseObject in BusinessObject Class

 Base Object Class Code Given Below : 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

namespace BusinessObject

{

   public  abstract class BaseObject

    {

        #region Properties

        public Guid Id { get; set; }

        public string CreatedBy { get; set; }

        public DateTime CreatedOn { get; set; }

        public string UpdatedBy { get; set; }

        public DateTime UpdatedOn { get; set; }

        #endregion

        public BaseObject()

        {

            Id = Guid.NewGuid();

        }

        public BaseObject(Guid id)

        {

            Id = id;

        }

        public BaseObject(Guid id, string createdBy, DateTime createdOn, string updatedBy, DateTime updatedOn)

        {

            Id = id;

            CreatedBy = createdBy;

            CreatedOn = createdOn;

            UpdatedBy = updatedBy;

            UpdatedOn = updatedOn;

        }

        public BaseObject(IDataReader reader)

        {

            Id = DBNull.Value != reader["Id"] ? (Guid)reader["Id"] : default(Guid);

            CreatedBy = DBNull.Value != reader["CreatedBy"] ? (string)reader["CreatedBy"] : default(string);

            CreatedOn = DBNull.Value != reader["CreatedOn"] ? (DateTime)reader["CreatedOn"] : default(DateTime);

            UpdatedBy = DBNull.Value != reader["UpdatedBy"] ? (string)reader["UpdatedBy"] : default(string);

            UpdatedOn = DBNull.Value != reader["UpdatedOn"] ? (DateTime)reader["UpdatedOn"] : default(DateTime);

        }

        public BaseObject(DataRow row)

        {

            Id = DBNull.Value != row["Id"] ? (Guid)row["Id"] : default(Guid);

            CreatedBy = DBNull.Value != row["CreatedBy"] ? (string)row["CreatedBy"] : default(string);

            CreatedOn = DBNull.Value != row["CreatedOn"] ? (DateTime)row["CreatedOn"] : default(DateTime);

            UpdatedBy = DBNull.Value != row["UpdatedBy"] ? (string)row["UpdatedBy"] : default(string);

            UpdatedOn = DBNull.Value != row["UpdatedOn"] ? (DateTime)row["UpdatedOn"] : default(DateTime);

        }

        public BaseObject(BaseObject obj)

        {

            Id = obj.Id;

            CreatedBy = obj.CreatedBy;

            CreatedOn = obj.CreatedOn;

            UpdatedBy = obj.UpdatedBy;

            UpdatedOn = obj.UpdatedOn;

        }

    }

}