jquery easyui datagrid mvc server端分页排序筛选的实现

1自定义一个ModelBinder

 public class filterRule
    {
        public string field { get; set; }
        public string op { get; set; }
        public string value { get; set; }
    }
    public class dataGridFilter
    {
        public dataGridFilter()
        {
            filterRules = new HashSet<filterRule>();
        }
        public int page { get; set; }
        public int rows { get; set; }
        public string sort { get; set; }
        public string order { get; set; }
        public IEnumerable<filterRule> filterRules { get; set; }
    }
 
    public class DataGridFilterBinderProvider : IModelBinder
    {
        public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
            if (controllerContext == null)
                throw new ArgumentNullException("controllerContext", "controllerContext is null.");
            if (bindingContext == null)
                throw new ArgumentNullException("bindingContext", "bindingContext is null.");
            if (bindingContext.ModelType == typeof(dataGridFilter))
            {
                HttpRequestBase request = controllerContext.HttpContext.Request;
                dataGridFilter filter = new dataGridFilter();
                if (request.HttpMethod == "GET")
                {
                    filter.order = request.QueryString["order"];
                    filter.page = Convert.ToInt32(request.QueryString["page"]);
                    filter.rows = Convert.ToInt32(request.QueryString["rows"]);
                    filter.sort = request.QueryString["sort"];
                    var filterRules = request.QueryString["filterRules"];
                    if (!string.IsNullOrEmpty(filterRules))
                    {
                        var rules = JsonConvert.DeserializeObject<IEnumerable<filterRule>>(filterRules);
                        filter.filterRules = rules;
 
                    }
 
                    return filter;
                }
                else {
                    filter.order = request.Form["order"];
                    filter.page = Convert.ToInt32(request.Form["page"]);
                    filter.rows = Convert.ToInt32(request.Form["rows"]);
                    filter.sort = request.Form["sort"];
                    var filterRules = request.Form["filterRules"];
                    if (!string.IsNullOrEmpty(filterRules))
                    {
                        var rules = JsonConvert.DeserializeObject<IEnumerable<filterRule>>(filterRules);
                        filter.filterRules = rules;
 
                    }
 
                    return filter;
                }
 
            }
           else
            {
                return BindModel(controllerContext, bindingContext);
            }
        }
 
        private Nullable<T> TryGet<T>(ModelBindingContext bindingContext, string key) where T : struct
        {
            if (String.IsNullOrEmpty(key))
                return null;
 
            ValueProviderResult valueResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName + "." + key);
            if (valueResult == null && bindingContext.FallbackToEmptyPrefix == true)
                valueResult = bindingContext.ValueProvider.GetValue(key);
 
            bindingContext.ModelState.SetModelValue(bindingContext.ModelName, valueResult);
 
            if (valueResult == null)
                return null;
 
            try
            {
                return (Nullable<T>)valueResult.ConvertTo(typeof(T));
            }
            catch (Exception ex)
            {
                bindingContext.ModelState.AddModelError(bindingContext.ModelName, ex);
                return null;
            }
        }
    }

　　controller代码

 public ActionResult Get([ModelBinder(typeof(DataGridFilterBinderProvider))]dataGridFilter request)
        {
            //var filter = JsonConvert.DeserializeObject<IEnumerable< filterRule>>(filterRules);
            //int page = 1; int rows = 10; string sort = "Id"; string order = "asc"; ; IEnumerable<filterRules> filterRules = null;
            int count = products.Count();
            //var query = products.OrderBy(string.Format("{0} {1}", sort, order)).Skip((page-1)*rows).Take(rows);
            var query = products.OrderBy(string.Format("{0} {1}", request.sort, request.order)).Skip((request.page - 1) * request.rows).Take(request.rows);
 
            return Json(new { total = count, rows = query }, JsonRequestBehavior.AllowGet);
 
        }

　　html代码

<script type="text/javascript">
 
    $(function () {
        $('#grid').datagrid({
            title: 'Product--100',
            url: '/Home/Get',
            method:'post',
            width: '100%',
            height: 'auto',
            rownumbers: true,
            sortName: 'Id',
            SortOrder: 'asc',
            columns: [[
                { field: 'Id', title: 'Id', sortable: true },
                { field: 'Name', title: 'Name', sortable: true },
                { field: 'Unit', title: 'Unit', sortable: true },
                { field: 'Price', title: 'Price', sortable: true }
            ]],
            pagination: true,
            pagePosition: 'bottom',
            pageSize: 10,
            enableFilter:true,
            remoteFilter:true
        }).datagrid('enableFilter');
 
    })
 
</script>