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how to get the previous row data in rdlc report using matrix

hi
i am using matrix to rdlc report design because of some dynamic columns. but i am not able to use "previous" function of rdlc because it is not supported by matrix tool.. so how can i get the data of previous row of specified column.

plz reply asap.
i am displaying data like this:

name price1 price2 differance
==== ==== ==== ========
shirt1 - - ------1000 ------- -0
shirt2 - 2000 ---- - ------- 0
shirt3 - 1000 ----- - ------ -1000
shirt4 - - ----- 3000 -- ---- 0
shirt5 - ------- 5000 ----- 2000

here differance formula is differance=(current row price-previous row price)


but all this should be in matrics form .... how to achieve "differance" column in rdlc report?
Apr 20 '09 #1
1 5360
plz reply me asap...........
Apr 20 '09 #2

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