PetaPocoPage View IModelBinder to map the DataTable page request into a simple request object

DataTableModelBinder.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using PetaPocoPage.Models;

namespace PetaPocoPage.Helpers
{
    public class DataTablesModelBinder : IModelBinder
    {
        public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
            var pageRequest = new DataTablesPageRequest
            {
                Echo          = BindDataTablesRequestParam<Int32>(bindingContext, "sEcho"),
                DisplayStart  = BindDataTablesRequestParam<Int32>(bindingContext, "iDisplayStart"),
                DisplayLength = BindDataTablesRequestParam<Int32>(bindingContext, "iDisplayLength"),
                ColumnNames   = BindDataTablesRequestParam<string>(bindingContext, "sColumns"),
                Columns       = BindDataTablesRequestParam<Int32>(bindingContext, "iColumns"),
                Search        = BindDataTablesRequestParam<string>(bindingContext, "sSearch"),
                Regex         = BindDataTablesRequestParam<bool>(bindingContext, "bRegex"),
                SortingCols   = BindDataTablesRequestParam<Int32>(bindingContext, "iSortingCols"),
                DataProp      = BindDataTablesRequestParam<string>(controllerContext.HttpContext.Request, "mDataProp_"),
                RegexColumns  = BindDataTablesRequestParam<bool>(controllerContext.HttpContext.Request, "bRegex_"),
                Searchable    = BindDataTablesRequestParam<bool>(controllerContext.HttpContext.Request, "bSearchable_"),
                Sortable      = BindDataTablesRequestParam<bool>(controllerContext.HttpContext.Request, "bSortable_"),
                SortCol       = BindDataTablesRequestParam<Int32>(controllerContext.HttpContext.Request, "iSortCol_"),
                SearchColumns = BindDataTablesRequestParam<string>(controllerContext.HttpContext.Request, "sSearch_"),
                SortDir       = BindDataTablesRequestParam<string>(controllerContext.HttpContext.Request, "sSortDir_")
            };

            return pageRequest;
        }

        private static T BindDataTablesRequestParam<T>(ModelBindingContext context, string propertyName)
        {
            return (T)context.ValueProvider.GetValue(propertyName).ConvertTo(typeof(T));
        }

        private static List<T> BindDataTablesRequestParam<T>(HttpRequestBase request, string keyPrefix)
        {
            return (from k in request.Params.AllKeys
                    where k.StartsWith(keyPrefix)
                    orderby int.Parse(k.Replace(keyPrefix, string.Empty))
                    select (T)Convert.ChangeType(request.Params[k], typeof(T))
                   ).ToList();
        }
    }
}