MapAndGroup
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Shows grouping and sorting behavior when using data-mapped columns.

By default, the grid sorts the actual data, not the display value. The
sample shows how you can override this behavior and sort by customer 
name rather than customer ID (for example).

Grouping is also done based on the actual data, not display value. The
sample shows that in the unlikely event you have two or more data 
values that map to the same display string, the grid will create one
group for each value.

(Based on an original sample provided by Glen Starrett)