>>iif(mod(recno()/2)=0,rgb(),rgb()) this command is used to change the dynamicbackcolor of grid. but it doesn't work well on indexed vues or tables. how to correct it ?
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>Depends. Is it possible to use a cursor? E.g.:
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select * from thetable order by 1,2,3 into c_thecursor nofilter

The record numbers of that cursor will be fine.
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>Here's another trick (from the head). Assume thetable has a field named ID.
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select from thetable id as col_id, 00000000 as col_color into cursor c_color nofilter
>replace all col_color with iif(mod(recno(),2)=0,rgb(0,0,255),rgb(255,255,0))
>index on col_id tag primary
>select thetable
>set relation to id into c_color

>Then use c_color.col_color in the dynamicbackcolor() of the grid.

This would work perfectly, it really is a good trick. The exception to this would be repeated values of col_id, where each repeated value of that field would point to the same record in the c_color cursor, and thus show in the same color. Which is not much of trouble, IMO, but then I'm not the originator - he may have other requirements (or not have this problem at all). We'll see. I actually like this one, goes with my principle that the color should not be recalculated for each refresh.