C1Report有提供group做分组。使用groupheader和footer来显示分组。
设计合计是下面的结构
report header ----------------------------------
sum(expense) [sum for the entire report]
group 0 header --------------------------------
sum(expense) [sum for group 0]
group 1 header --------------------------------
sum(expense) [sum for group 1]
detail ------------------------------------------
group 1 footer --------------------------------
sum(expense) [sum for group 1]
group 0 footer --------------------------------
sum(expense) [sum for group 0]
report footer ----------------------------------
sum(expense) [sum for the entire report]