[Solved] Crash when using RowAction, Aggregates, & Razor

[iConect Developer - Mike]

If you take the example demo:

@model IEnumerable<Product>

@(Html.Telerik().Grid(Model)
      .Name("Grid")
      .Columns(columns =>
      {
        columns.Bound(o => o.ProductName)
                .Aggregate(aggregates => aggregates.Count())
                .FooterTemplate(@<text>Total Count: @item.Count</text>)
                .GroupFooterTemplate(@<text>Count: @item.Count</text>);

        columns.Bound(o => o.UnitPrice)
                .Width(200)
                .Aggregate(aggreages => aggreages.Sum())
                .Format("{0:c}")
                .FooterTemplate(@<text>Total Sum: @item.Sum.Format("{0:c}")</text>)
                .GroupFooterTemplate(@<text>Sum: @item.Sum.Format("{0:c}")</text>);

        columns.Bound(o => o.UnitsOnOrder)
                .Width(200)
                .Aggregate(aggregates => aggregates.Average())
                .FooterTemplate(@<text>Average: @item.Average</text>)
                .GroupFooterTemplate(@<text>Average: @item.Average</text>);

        columns.Bound(o => o.UnitsInStock)
                .Width(100)
                .Aggregate(aggregates => aggregates.Count().Min().Max())
                .FooterTemplate(
                @<text>
                    <div>Min: @item.Min</div>
                    <div>Max: @item.Max</div>
                </text>)
                .GroupHeaderTemplate(@<text>@item.Title: @item.Key (Count: @item.Count)</text>);
      })
        .Sortable()
        .Pageable()
        .Groupable(settings => settings.Groups(groups => groups.Add(o => o.UnitsInStock)).Visible(false))
)

And simply add in:

.RowAction(row =>
{
  if (row.DataItem.ProductName == "")
  {
    row.HtmlAttributes["style"] = "visibility:hidden";
  }
})

It crashes 100% of the time the following error:

Unable to cast object of type 'Telerik.Web.Mvc.Infrastructure.AggregateFunctionsGroup' to type 'Telerik.Web.Mvc.Examples.Models.Product'.

EDIT:

Upon further review it crashes in the ASPX version as well by adding this RowAction. Is this a known issue, and is there a work around?

[Rosen]

Hi Keith,

I was able to recreate the error you have described. We have addressed it and I'm attaching an internal build which contains the fix. I have also updated your telerik points as a token of gratitude for bringing this to our attention.

All the best,
Rosen
the Telerik team