Telerik.Web.Mvc.GridActionAttribute.OnActionExecuting C# (CSharp) Method

        public void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (filterContext.ActionParameters.ContainsKey(ActionParameterName))
            {
                GridCommand command = new GridCommand
                {
                    Page = filterContext.Controller.ValueOf<int>(Prefix(GridUrlParameters.CurrentPage)),
                    PageSize = filterContext.Controller.ValueOf<int>(Prefix(GridUrlParameters.PageSize))
                };

                string orderBy = filterContext.Controller.ValueOf<string>(Prefix(GridUrlParameters.OrderBy));

                command.SortDescriptors.AddRange(GridDescriptorSerializer.Deserialize<SortDescriptor>(orderBy));

                string filter = filterContext.Controller.ValueOf<string>(Prefix(GridUrlParameters.Filter));

                command.FilterDescriptors.AddRange(FilterDescriptorFactory.Create(filter));

                string groupBy = filterContext.Controller.ValueOf<string>(Prefix(GridUrlParameters.GroupBy));

                command.GroupDescriptors.AddRange(GridDescriptorSerializer.Deserialize<GroupDescriptor>(groupBy));

                filterContext.ActionParameters[ActionParameterName] = command;
            }
        }