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
Chart= Forms("窗口1").Controls("Chart1") ' 引用窗口中的图表
Chart.SeriesList.Clear() '清除图表原来的图系
Chart.VisualEffect = True '加上这一行,让你的图表更漂亮
Chart.ChartType = ChartTypeEnum.Pie '图表1类型改为Bar(条形)
Dim t As Table = Tables("表A")
Dim sm As Integer = t.Compute("Sum(第二列)") '计算总数量
For Each s As String In t.DataTable.GetValues("第一列", "第一列 is not null")
Dim sum = t.DataTable.compute("sum(第二列)", "第一列='" & s & "'")
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 = s & "(" & sum & ")" '设置图系的标题
Series.Y(0) = sum
Series.TooltipText = Series.Text & " : {#YVAL}" '显示数据
Series.DataLabelText = Math.Round(sum*100/sm,2) & "%" '计算百分比
Next
Chart.LegendVisible = True '显示图列
Chart.LegendCompass= CompassEnum.East '图列显示在东方(右方)