MVC Controller Sample with LIST,ADD,EDIT,VIEW,DELETE

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.UI;
using BusinessLogic;
using BusinessObject;
using ERPHotel.Models;

namespace ERPHotel.Controllers
{
    public class UserLevelController : Controller
    {
        private ActionsEnum commonActions;

        //
        // GET: /UserLevel/

        public ActionResult UserLevel(UserLevelModel model)
        {
          
            DataSet ds =(DataSet)model.GetFieldValues(UserLevelModel.ControlsEnum.USERLEVEL);           
            ViewBag.UserLevelList = ds.Tables[1];
            ViewBag.message = @"<script type='text/javascript' language='javascript'>$(document).ready(function(){ShowListing(1);});</script>";
            return View();
        }

        [HttpPost]
        public ActionResult UserLevel(ERPHotel.Models.UserLevelModel model, string Command, FormCollection frmCollection)
        {

            var radio = frmCollection.GetValue("SelectOne");

            int result = 0;
            user_groups objuser_groups = new user_groups();

            commonActions = (ActionsEnum)(Enum.Parse(typeof(ActionsEnum), Command));

            switch (commonActions)
            {
                case ActionsEnum.NEW:
                    break;
                case ActionsEnum.SAVE:
                    if (model != null)
                    {
                        objuser_groups.ugrp_admin = model.ugrp_admin;
                        objuser_groups.ugrp_desc = model.ugrp_desc;
                        objuser_groups.ugrp_id = model.ugrp_id;
                        objuser_groups.ugrp_name = model.ugrp_descr;

                        result = user_groupsBL.Saveuser_groups(objuser_groups, 1);
                        if (result > 0)
                        {
                            DataSet ds = (DataSet)model.GetFieldValues(UserLevelModel.ControlsEnum.USERLEVEL);
                            ViewBag.UserLevelList = ds.Tables[1];
                           
                        }
                    }
                    break;
                case ActionsEnum.DELETE:
                    break;
                case ActionsEnum.CANCEL:
                    break;
                case ActionsEnum.VIEW:
                    break;
                case ActionsEnum.EDIT:
                    if (model != null)
                    {
                       DataTable dtuser_groups = user_groupsBL.Getuser_groups(Convert.ToInt32(radio.AttemptedValue));
                        if (dtuser_groups.Rows.Count > 0)
                        {
                            objuser_groups = new user_groups();
                            objuser_groups.ugrp_id =Convert.ToInt32(dtuser_groups.Rows[0][user_groups.F_ugrp_id].ToString());
                            objuser_groups.ugrp_name = dtuser_groups.Rows[0][user_groups.F_ugrp_name].ToString();
                            objuser_groups.ugrp_desc = dtuser_groups.Rows[0][user_groups.F_ugrp_desc].ToString();
                            objuser_groups.ugrp_admin = Convert.ToBoolean(dtuser_groups.Rows[0][user_groups.F_ugrp_admin]);
                                                       model.ugrp_admin = objuser_groups.ugrp_admin;
                            model.ugrp_desc = objuser_groups.ugrp_desc;
                            model.ugrp_id = objuser_groups.ugrp_id;
                            model.ugrp_descr = objuser_groups.ugrp_name;
                            var ugrp_descr = frmCollection.GetValue("ugrp_descr");
                                               }
                        ViewBag.message = @"<script type='text/javascript' language='javascript'>$(document).ready(function(){ShowListing();});</script>";
                    }
                    break;
            }

            return View(model);
        }

    }
}