主题：汇总统计

Dim t As Table = Tables("融资组合查询_table1")
Dim g As Subtotalgroup
t.SubtotalGroups.Clear()
t.GroupAboveData = True
t.TreeVisible = True
t.SpillNode = True

g = New Subtotalgroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "备案单位"
g.TotalOn = "还款金额_*"
g.Caption = "{0} 小计"
t.SubtotalGroups.Add(g)

g = New Subtotalgroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "*"
g.TotalOn = "*"
g.Caption = "总计"
t.SubtotalGroups.Add(g)

t.Subtotal()

 窗口中形成的统计表，列数不固定 ，如何对所有列实现分组统计 要的就是汇总模式的效果（有目录树，统计分组在上）

求教！