......

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) = Format(t.Rows(i)("球号百分比_中标"),"00.0%") \'指定垂直坐标
    Chart.AxisX.SetValueLabel(i, Format(t.Rows(i)("开标日期"),"MM-dd")) \'指定字符表示
Next

......

http://www.foxtable.com/webhelp/scr/0360.htm

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("监理投标测算_Table1") \'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 \'图表类型改为Bar(条形)
\'Chart.AxisX.DateType = True \'明确指定X轴是日期型
\'Chart.AxisX.AnnoFormatString = "MM-dd" \'指定日期标示格式
\'
Chart.SeriesList.Clear() \'清除图表原来的图系
Series = Chart.SeriesList.Add() \'增加一个图系
Series.Length = t.Rows.Count \'设置图系的长度
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)("球号百分比_中标") * 100 \'指定垂直坐标
    Chart.AxisX.SetValueLabel(i, Format(t.Rows(i)("开标日期"),"MM-dd")) \'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
Chart.LegendVisible = True \'显示图列
Chart.LegendCompass = CompassEnum.South \'图列显示在南方(底端)
Chart.AxisX.AnnoRotation = - 45 \'X轴标示逆时针旋转45度
Series.DataLabelText = "{#YVAL}%"
Chart.AxisX.AnnoFormatString = "00.0%"
Chart.SeriesList(0).FitType = FitTypeEnum.Spline

参考：http://www.foxtable.com/webhelp/scr/1027.htm