Dim g As New GroupTableBuilder("统计表1", DataTables("表A"))
g.Groups.AddDef("日期", "月份")
g.Totals.AddDef("比例", AggregateEnum.Average, "平均值")
g.Build()
'MainTable = Tables("统计表1")
Tables("百分比_table1").DataSource = g.BuildDataSource
Tables("百分比_table1").font = New Font("微软雅黑", 16) '设置字体
For Each c As Col In Tables("百分比_table1").Cols '平均值列设置百分比显示
If c.Caption = "平均值" Then
c.DataCol.SetFormat("0.00%")
End If
Next
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1") '定义一个变量t引用数据表
Chart= e.Form.Controls("Chart1") '引用窗口中的图表
Chart.ChartType = ChartTypeEnum.Bar '设置图表类型
Chart.SeriesList.Clear() '清除图表原来的图系
chart.AxisX.ClearValueLabel '清除数值字符标示
Series = Chart.SeriesList.Add() '增加一个图系
Series.Length = t.Rows.Count '图系的数据点数等于表的行数
For i As Integer = 0 To t.Rows.Count - 1 '指定每个数据点的位置
Series.X(i) = i '指定水平坐标
Series.Y(i) = t.Rows(i)("平均值") '指定垂直坐标
Chart.AxisX.SetValueLabel(i, t.Rows(i)("月份")) '指定字符表示
Next
Chart.AxisX.AnnoWithLabels = True '启用字符标示
Chart.VisualEffect = True '加上这一行,让你的图表更漂亮
Series.DataLabelText = "{#YVAL}" '固定标示