I have to call the data grid's sorting mechanism flawed.
Let's examine a case where you want to sort a dataGrid by a date
column. In all likelihood, you're going to have a labelFunction to
format your date objects into a string. Depending on your locale,
that string is probably not what you want to sort on (i.e. 02/04/05
comes before 02/03/06 on the calendar, but not as a string), so you'd
like to write a sortCompare function for that column.
Unfortunately, the sortCompare function only receives the string
value from the labelFunction, so you'd either have to do some very
slow string parsing, or sort based on the results from the
labelFunction alone. You don't get a chance to compare any more
information about a row than the string returned by a labelFunction,
and the labelFunction can only return a string.
Not a good way to do it, Macromedia!
So, what is the best workaround? Let it sort once, then resort using
the headerRelease event and operating on the DataProvider? (assuming
headerRelease fires after sorting is done - contrary to the
documentation, but in line with Ailstair McLeod's tests)
Sean
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