对绑定到WebAPI的Kendo网格进行分页和过滤

Question

我有一个绑定到WebAPI端点的网格，我想执行服务器端分页和过滤。我正在尝试使用ToDataSourceResult()扩展程序。但是，网格不会显示结果。

我已在控制器中验证了响应确实在Data成员上有正确的项目。

我的观点：

@{
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@(
    Html.Kendo().Grid<CMDB.Entities.Asset>()
    .Name("AssetGrid")
    .Columns(col =>
    {
        col.Bound(c => c.AssetTypeInfo.Meaning);
        col.Bound(c => c.AssetSubTypeInfo.Meaning);
        col.Bound(c => c.Name);
        col.Bound(c => c.ManagerInfo.DisplayName);
        col.Bound(c => c.DirectorInfo.DisplayName);
        col.Bound(c => c.BusinessOwnerInfo.DisplayName);
    })
    .HtmlAttributes(new { style = "height: 300px" })
    .Scrollable()
    .Filterable()
    .Sortable()
    .Pageable(p => p
        .PageSizes(true)
        .Refresh(true)
        .ButtonCount(5))
    .DataSource(ds => ds
        .WebApi()
        .ServerOperation(true)
        .PageSize(20)
        .Read(read => read.Url(Url.HttpRouteUrl("DefaultAPI",
        new { controller = "Values", action = "SearchAssets" })))
    ))

我的控制器操作：

[HttpGet]
public DataSourceResult SearchAssets([ModelBinder(typeof(WebApiDataSourceRequestModelBinder))] DataSourceRequest request)
{
    using (var ctx = new Data.DBContext())
    {
        var data = (from a in ctx.Query<Entities.Asset>()
                   select a);
        var rr = data.ToDataSourceResult(request);

        return rr;
    }     
}