BLL code c#

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using CRM.Lib.DAL;

namespace CRM.Lib
{
    public class Helpdesk
    {

        #region CONSTRUCTOR
        public Helpdesk()
        {
            this.init();
        }

        public void init()
        {
            this.ID = 0;
            
            this.LastName = "";
            this.FirstName = "";
            this.MiddleName = "";
            this.VIPNo = "";
            this.ContactNo = "";
            this.Email = "";
            this.Details = "";
            this.Branch = "";
            this.AssignedStaff = "";
            this.StatusType = 0;
            this.RequestDate = DateTime.Now;
            this.RequestTime = DateTime.Now;
            this.Solution = "";
            this.Discontinued = 0;
            this.CreatedBy = "";
            this.CreatedDate = DateTime.Now;
            this.LastModifiedBy = "";
            this.LastModifiedDate = DateTime.Now;

        }
        #endregion
        #region Properties
        public int ID { get; set; }
        public string CustomerName {
            get { return this.FirstName + " " + this.MiddleName + " " + this.LastName; } 
        }
        public string LastName { get; set; }
        public string FirstName { get; set; }
        public string MiddleName { get; set; }
        public string VIPNo { get; set; }
        public string ContactNo { get; set; }
        public string Email { get; set; }
        public string Details { get; set; }
        public string Branch { get; set; }
        public string AssignedStaff { get; set; }
        public int StatusType { get; set; }
        public string Status {
            get { return CRM.Lib.StatusType.GetById(this.StatusType).Status.ToString(); } 
        }
        public DateTime RequestDate { get; set; }
        public DateTime RequestTime { get; set; }
        public string Solution { get; set; }
        public int Discontinued { get; set; }
        public string CreatedBy { get; set; }
        public DateTime CreatedDate { get; set; }
        public string LastModifiedBy { get; set; }
        public DateTime LastModifiedDate { get; set; }

        #endregion

        #region Public Methods
        public static Helpdesk GetById(int id)
        {
            var dal = new HelpdeskDAL();
            var instance = new Helpdesk();
            instance.Bind(dal.GetById(id));
            return instance;
        }
        public static List GetAll()
        {
            var dal = new HelpdeskDAL();
            var collection = new List();
            foreach (DataRow row in dal.GetAll().Rows)
            {
                var instance = new Helpdesk();
                instance.Bind(row);
                collection.Add(instance);
            }
            return collection;
        }
        public static List GetByStaffId(string id)
        {
            var dal = new HelpdeskDAL();
            var collection = new List();
            foreach (DataRow row in dal.GetByStaffId(id).Rows)
            {
                var instance = new Helpdesk();
                instance.Bind(row);
                collection.Add(instance);
            }
            return collection;
        }
        public void Bind(DataRow row)
        {
            if (row != null)
            {
                this.ID = Convert.ToInt32(row["ID"]);
                
                this.LastName = Convert.ToString(row["LastName"]);
                this.FirstName = Convert.ToString(row["FirstName"]);
                this.MiddleName = Convert.ToString(row["MiddleName"]);
                this.VIPNo = Convert.ToString(row["VIPNo"]);
                this.ContactNo = Convert.ToString(row["ContactNo"]);
                this.Email = Convert.ToString(row["Email"]);
                this.Details = Convert.ToString(row["Details"]);
                this.Branch = Convert.ToString(row["Branch"]);
                this.AssignedStaff = Convert.ToString(row["AssignedStaff"]);
                this.StatusType = Convert.ToInt32(row["StatusType"]);
                this.RequestDate = Convert.ToDateTime(row["RequestDate"]);
                this.RequestTime = Convert.ToDateTime(row["RequestTime"]);
                this.Solution = Convert.ToString(row["Solution"]);
                this.Discontinued = Convert.ToInt32(row["Discontinued"]);
                this.CreatedBy = Convert.ToString(row["CreatedBy"]);
                this.CreatedDate = Convert.ToDateTime(row["CreatedDate"]);
                this.LastModifiedBy = Convert.ToString(row["LastModifiedBy"]);

                if (!DBNull.Value.Equals(row["LastModifiedDate"]))
                    this.LastModifiedDate = Convert.ToDateTime(row["LastModifiedDate"]);

            }
        }
        public bool Save()
        {
            var dal = new HelpdeskDAL();

            string message = "";
            int ret = dal.Save(this.ID, this.CustomerName,this.LastName,this.FirstName,this.MiddleName, this.VIPNo, this.ContactNo, this.Email, this.Details, this.Branch, this.AssignedStaff, this.StatusType, this.RequestDate, this.RequestTime, this.Solution, this.Discontinued, this.CreatedBy, this.CreatedDate, this.LastModifiedBy, this.LastModifiedDate, out message);

            this.ID = ret;
            return (ret > 0);
        }
        public bool Delete()
        {
            var dal = new HelpdeskDAL();
            bool ret = dal.Delete(this.ID);
            return ret;
        }
        #endregion
    }
}