Dim g As New GroupTableBuilder("统计表2", DataTables("支出明细"))
g.Groups.AddDef("支出项目")
g.Totals.AddDef("金额")
g.filter = Tables("支出明细").filter
g.Build()

Dim Chart As WinForm.Chart \'定义一个图表变量
Dim Series As WinForm.ChartSeries \'定义一个图系变量
Dim t As Table = Tables("统计表2") \'定义一个变量t引用数据表
Dim sm As Integer = t.Compute("Sum(金额)") \'计算总数量
Chart= Forms("对账").Controls("Chart1") \' 引用窗口中的图表
Chart.SeriesList.Clear() \'清除图表原来的图系
Chart.ChartType = ChartTypeEnum.Pie \'图表1类型改为Bar(条形)
For Each r As Row In t.Rows
    Series = Chart.SeriesList.Add() \'增加一个图系
    Series.Length = 1 \'一个系列只能包括一个值
    Series.Text = r("支出项目") & "(" & r("金额") & ")" \'设置图系的标题
    Series.Y(0) = r("金额") \'指定值
    Series.DataLabelText = Math.Round(r("金额")*100/sm,2) & "%" \'计算百分比
Next
Chart.LegendVisible = True \'显示图列
Chart.TopMost = True \'不同图表间切换
Chart.VisualEffect = True \'加上这一行,让你的图表更漂亮
Chart.LegendCompass= CompassEnum.South \'图列显示在东方(右方)