[Solved] Best strategy for computed column?

[Andrew Blum]

Maybe this is a basic question, I am not sure.  I want to have a computed column, very simple definition such as Col1+Col2.  I want that computed definition to be rendered in an ClientTemplate column definition.  I want to make sure that if Col1 is updated on the grid as a regular column that this ClientTemplate gets updated as well.  What is the best way to achieve this?