[Solved] Custom Column - aggregate function

[Justin Lee]

I have a unusual senario that I'm hoping you can help with.  I have a grid with dynamic columns.  The value in each cell is calculated using the column and the row (dataitem).  So I created a custom column class (inherit GridViewBoundColumnBase), which overrides the CreateCellElement method where the value is calculated based on the column info and the dataItem, and a TextBlock displaying the value is returned.

This works great - no problems.  But I have a requirement to add a total's row.  (the values are decimals)

Is there any way to accomplish this? The sumfunction class expects a property name - which I don't have.  Is it possible to create a custom aggregate class?  If so, are there any examples?

Thanks,
Justin

[Maya]

Hi Justin Lee,

Depending on your specific requirements and settings, you may try to define a custom generic aggregate expression. Please take a look at this forum thread for a reference.
 

Kind regards,
Maya
the Telerik team

[Justin Lee]

The solution in that thread worked for me. Thanks!