hallo teman2.
saya mau minta bantuan untuk menghitung data di data grid beda field dan beda 
row gimana ya cara? 
misal:

           field1           field2          field3          field4
row1                                                              
row2                                                             =field4 row1 
- filed3 row2
row3                                                             =filed4 row2 - 
field3 row3
row4                                                             dst
dst   

terima kasih atas bantuannya




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