LIOT/EMIS.Web/Controls/NumberRangeDropdownListExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Bowin.Web.Controls.Mvc;

namespace EMIS.Web.Controls
{
    public static class NumberRangeDropdownListExtensions
    {
        public static MvcHtmlString NumberRangeDropdownList(this HtmlHelper htmlHelper,
            int minValue, int maxValue, 
            DropdownListOptions dropdownListOptions = null,
            System.Collections.Generic.IDictionary<string, string> htmlAttributes = null)
        {
            if (dropdownListOptions == null)
                dropdownListOptions = new DropdownListOptions();
            List<int> valueList = new List<int>();

            for (int i = minValue; i <= maxValue; i ++)
            {
                valueList.Add(i);
            }

            dropdownListOptions.ItemList = valueList.Select(x => new DropdownListItem { Text = x.ToString(), Value = x.ToString() }).ToList();
            if (dropdownListOptions.SelectedValue == null)
            {
                dropdownListOptions.SelectedValue = DropdownList.PLEASE_SELECT.ToString();
            }

            return htmlHelper.DropdownList(dropdownListOptions, htmlAttributes);
        }
    }
}