Dim d As Date = Date.Today
Dim d1 As Date = new Date(2019, d.month, 1)
Dim d2 = d1.AddMonths(-1)
Dim filter As String = "日期 >= '" & Format(d2, "MM.dd") & "' and 日期 < '" & Format(d1, "MM.dd") & "'"
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("物料不合格明细") '定义一个变量tbl引用数据表
Dim lst As List(Of String) = tbl.GetValues("供应商",filter) '获得产品名称集合
Chart = e.Form.Controls("Chart1") ' 引用窗口中的图表
Chart.ChartType = ChartTypeEnum.Bar '图表类型该为Bar(条形)
Chart.HeaderText = d2.month & "月"
Chart.AxisX.Major = 2
Chart.AxisY.Major = 2
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("count(供应商)","[供应商] = '" & lst(i) & "'and " & filter) '指定垂直坐标
Chart.AxisX.SetValueLabel(i, lst(i)) '指定字符表示
Next
Chart.SeriesList(0).fillColor = Color.Green
Chart.AxisX.AnnoWithLabels = True '启用字符标示
Series.DataLabelText = "{#YVAL}"
Chart.AxisX.AnnoRotation = - 45 'X轴标示逆时针旋转45度
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Post By：2019/4/24 13:48:00 [只看该作者]
