生成统计之后，再设置汇总模式，不就好了？如代码

Dim t As Table = Tables("窗口1_Table1")
Dim g As SubtotalGroup
t.SubtotalGroups.Clear()
t.GroupAboveData = False
t.TreeVisible = False
t.SpillNode = True

g = New SubtotalGroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "四级科目"
g.TotalOn = "预算下达_金额,实际支付_金额,收支_结余"
g.Caption = "{0} 小计"
t.SubtotalGroups.Add(g)

g = New SubtotalGroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "*"
g.TotalOn = "预算下达_金额,实际支付_金额,收支_结余"
g.Caption = "总计"
t.SubtotalGroups.Add(g)

t.Subtotal()

这个意思？

http://www.foxtable.com/webhelp/scr/1964.htm

汇总统计的话，只能这样了

Dim t As Table = Tables("窗口1_Table1")
Dim g As Subtotalgroup
t.SubtotalGroups.Clear()
t.GroupAboveData = False
t.TreeVisible = False
t.SpillNode = False

g = New Subtotalgroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "四级科目"
g.TotalOn = "预算下达_金额,实际支付_金额,收支_结余"
g.Caption = "{0} 小计"
t.SubtotalGroups.Add(g)

g = New Subtotalgroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "三级科目"
g.TotalOn = "预算下达_金额,实际支付_金额,收支_结余"
g.Caption = "{0} 小计"
t.SubtotalGroups.Add(g)

g = New Subtotalgroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "二级科目"
g.TotalOn = "预算下达_金额,实际支付_金额,收支_结余"
g.Caption = "{0} 小计"
t.SubtotalGroups.Add(g)

g = New Subtotalgroup
g.Aggregate = AggregateEnum.Sum
g.GroupOn = "一级科目"
g.TotalOn = "预算下达_金额,实际支付_金额,收支_结余"
g.Caption = "{0} 小计"
t.SubtotalGroups.Add(g)

t.Subtotal()

For i As Integer = 0 To t.Rows.count(True)-1
    Dim r As Row = t.Rows(i, True)
    If r.IsGroup Then
        r("资金来源") = Nothing
        If r.Level = 0 Then
            r("一级科目") = "总计"
        ElseIf r.Level = 1 Then
            r("二级科目") = "合计"
        ElseIf r.Level = 2 Then
            r("三级科目") = "合计"
        ElseIf r.Level = 3 Then
            r("四级科目") = "小计"
        End If
    End If
Next

 或者，这样写

Dim bd1 As New GroupTableBuilder("统计表1",DataTables("预算统计表"))
Dim dt1 As fxDataSource
bd1.Groups.AddDef("资金来源") \'根据型号分组
bd1.Groups.AddDef("预算资金性质") \'根据型号分组
bd1.Groups.AddDef("一级科目") \'根据型号分组
bd1.Groups.AddDef("二级科目") \'根据型号分组
bd1.Groups.AddDef("三级科目") \'根据型号分组
bd1.Groups.AddDef("四级科目") \'根据型号分组
bd1.Groups.AddDef("五级科目") \'根据型号分组
bd1.Groups.AddDef("六级科目") \'根据型号分组
bd1.Groups.AddDef("七级科目") \'根据型号分组
bd1.Totals.AddDef("预算下达金额","预算下达_金额")  \'对数量进行统计
dt1 = bd1.BuildDataSource()

Dim bd2 As New GroupTableBuilder("统计表2",DataTables("资金支出统计表"))
Dim dt2  As fxDataSource
bd2.Groups.AddDef("资金来源") \'根据型号分组
bd2.Groups.AddDef("预算资金性质") \'根据型号分组
bd2.Groups.AddDef("一级科目") \'根据型号分组
bd2.Groups.AddDef("二级科目") \'根据型号分组
bd2.Groups.AddDef("三级科目") \'根据型号分组
bd2.Groups.AddDef("四级科目") \'根据型号分组
bd2.Groups.AddDef("五级科目") \'根据型号分组
bd2.Groups.AddDef("六级科目") \'根据型号分组
bd2.Groups.AddDef("七级科目") \'根据型号分组
bd2.Totals.AddDef("支付金额","实际支付_金额") \'对数量进行统计dt2 = bd2.BuildDataSource()
dt2 = bd2.BuildDataSource()
Dim nms As String() = {"资金来源","预算资金性质","一级科目","二级科目","三级科目","四级科目","五级科目","六级科目","七级科目"}
dt1.Combine(nms,dt2,nms) \'将销售统计数据组合到进货统计数据
Tables("窗口1_Table1").DataSource = dt1 \'将统计结果绑定到Table
With DataTables("窗口1_Table1").DataCols  \'用表达式列计算库存数据
    .Add("收支_结余",Gettype(Decimal), "IsNull([预算下达_金额],0) - ISNULL([实际支付_金额],0)")
    \'.Add("库存_金额",Gettype(Double), "[库存_数量] /[进货_数量] * [进货_金额]")
End With

Dim t As Table = Tables("窗口1_Table1")
Dim ndr
For Each s1 As String In t.DataTable.GetValues("资金来源")
    For Each s2 As String In t.DataTable.GetValues("预算资金性质", "资金来源 = \'" & s1 & "\'")
        For Each s3 As String In t.DataTable.GetValues("一级科目", "资金来源 = \'" & s1 & "\' and 预算资金性质 = \'" & s2 & "\'")
            For Each s4 As String In t.DataTable.GetValues("二级科目", "资金来源 = \'" & s1 & "\' and 预算资金性质 = \'" & s2 & "\' and 一级科目 = \'" & s3 & "\'")
                For Each s5 As String In t.DataTable.GetValues("三级科目", "资金来源 = \'" & s1 & "\' and 预算资金性质 = \'" & s2 & "\' and 一级科目 = \'" & s3 & "\' and 二级科目 = \'" & s4 & "\'")
                    ndr = t.addnew
                    ndr("资金来源") = s1
                    ndr("预算资金性质") = s2
                    ndr("一级科目") = s3
                    ndr("二级科目") = s4
                    ndr("三级科目") = s5
                    ndr("四级科目") = " 小计"
                Next
                ndr = t.addnew
                ndr("资金来源") = s1
                ndr("预算资金性质") = s2
                ndr("一级科目") = s3
                ndr("二级科目") = s4
                ndr("三级科目") = "合计"
            Next
            ndr = t.addnew
            ndr("资金来源") = s1
            ndr("预算资金性质") = s2
            ndr("一级科目") = s3
            ndr("二级科目") = "合计"
        Next
        ndr = t.addnew
        ndr("资金来源") = s1
        ndr("预算资金性质") = s2
        ndr("一级科目") = " 总计"
    Next
Next
With Tables("窗口1_Table1")
    .MergeMode = MergeModeEnum.Standard \'标准合并模式
    .MergeCols.Clear() \'清除原来的合并列
    .MergeCols.Add("资金来源") \'加入要合并的列
    .Cols("资金来源").GrandTotal = True
    .MergeCols.Add("预算资金性质") \'加入要合并的列
    .Cols("预算资金性质").GrandTotal = True
    .MergeCols.Add("一级科目") \'加入要合并的列
   
    .MergeCols.Add("二级科目") \'加入要合并的列
    .MergeCols.Add("三级科目") \'加入要合并的列
    .MergeCols.Add("四级科目") \'加入要合并的列
    .MergeCols.Add("五级科目") \'加入要合并的列
    .MergeSort = "资金来源,预算资金性质,一级科目 desc,二级科目 desc,三级科目 desc,四级科目 desc,五级科目" \'设置合并模式下的排序方式
    .AllowMerge = True \'启用合并模式
    .GrandTotal = True
End With
Tables("窗口1_Table1").AutoSizeCols