Dim a As String =Forms("自定义生成图表").controls("TextBox1").value
Dim b As String=Forms("自定义生成图表").controls("TextBox2").value
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 tbl As DataTable = DataTables("工时") \'定义一个变量tbl引用数据表
Dim lst As List(Of String) = tbl.GetValues(a) \'获得产品名称集合
Chart = e.Form.Controls("Chart1") \' 引用窗口中的图表
Chart.SeriesList.Clear() \'清除图表原来的图系
Series = Chart.SeriesList.Add() \'增加一个图系
Series.Length = lst.Count \'设置图系的长度
For i As Integer = 0 To lst.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) = tbl.Compute("Sum(b)","[a] = \'" & lst(i) & "\'") \'指定垂直坐标
Chart.AxisX.SetValueLabel(i, lst(i)) \'指定字符表示
Next
Chart.AxisX.AnnoWithLabels = True \'启用字符标示
此主题相关图片如下:qq截图20171025115350.png