I have an excel formula which is given below
IF(ROW()-ROW($AJ$3)<$AJ$3,"",SUMPRODUCT(OFFSET(AB512,0,0,-$AJ$3,1),OFFSET($AI$222,0,0,$AJ$3,1))/SUM(OFFSET($AI$222,0,0,$AJ$3,1)))
how to convert this formula into equivalent c# code?
there is any tool to convert this?