Kendo Grid Server Sum & Average Aggregation Error

[Daniel]

Currently receiving the following error when attempting to implement server side sum aggregation when the grid is bound to a dynamic object.

No generic method 'Sum' on type 'System.Linq.Enumerable' is compatible with the supplied type arguments and arguments. No type arguments should be provided if the method is non-generic.

Using the following code to setup Aggregates, the col.DataType is System.Decimal. Min and Max aggregates work correctly.

.Aggregates(aggr =>
                {
                    Model.Columns.Where(x => x.SQLDataType == "money").ToList().ForEach(x =>
                    {
                        var col = Model.Columns.FirstOrDefault(c => c.ColumnName == x.ColumnName);
                        if (col != null)
                        {
                            aggr.Add(col.ColumnName, col.DataType).Sum();
                        }
                    });
                })

[Konstantin Dikov]

Hello Daniel,

For enabling aggregates for Grid bound to dynamic, please refer to the implementation in the following HowTo example:

• https://docs.telerik.com/aspnet-mvc/helpers/grid/how-to/Binding/grid-bind-to-datatable#aggregates

If the issue persists, please open a regular support ticket and attach a sample, runnable project with dummy data that replicates the issue, so we can debug it locally.


Regards,
Konstantin Dikov
Progress Telerik

[Daniel]

I have attached a copy of a sample project to my ticket #1361849

[Konstantin Dikov]

Hi Daniel,

My colleague is investigating the issue in project that you have attached and he will share his findings in the support ticket that you have opened. 

Regards,
Konstantin Dikov
Progress Telerik