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-  Foxtable(狐表)  (http://foxtable.net/bbs/index.asp)
--  专家坐堂  (http://foxtable.net/bbs/list.asp?boardid=2)
----  图表  (http://foxtable.net/bbs/dispbbs.asp?boardid=2&id=74134)

--  作者：cqlistone
--  发布时间：2015/9/3 13:02:00
--  图表

你好，为什么有空行就生成不了图显示“未将对象引用设置到对象的实例”
Dim Chart As WinForm.Chart
Dim Series As WinForm.ChartSeries
Dim tbl As DataTable = DataTables("停机处置")
Dim lst As List(Of String) = tbl.GetValues("机器号")
Chart = e.Form.Controls("Chart1")
Chart.ChartType = ChartTypeEnum.Bar
Chart.SeriesList.Clear()
Series = Chart.SeriesList.Add()
Series.Length = lst.Count
For i As Integer = 0 To lst.Count - 1
Series.X(i) = i \'指定水平坐标
Series.Y(i) = tbl.Compute("Avg(处置停机总耗时M)","[机器号] = \'" & lst(i) & "\'")
Chart.AxisX.SetValueLabel(i, lst(i))
Next

--  作者：大红袍
--  发布时间：2015/9/4 9:43:00
--

Dim Chart As WinForm.Chart

Dim Series As WinForm.ChartSeries

Dim tbl As DataTable = DataTables("停机处置")

Dim lst As List(Of String) = tbl.GetValues("机器号", "机器号 is not null")

Chart = e.Form.Controls("Chart1")

Chart.ChartType = ChartTypeEnum.Bar

Chart.SeriesList.Clear()

Series = Chart.SeriesList.Add()

Series.Length = lst.Count

For i As Integer = 0 To lst.Count - 1

Series.X(i) = i \'指定水平坐标

Series.Y(i) = tbl.Compute("Avg(处置停机总耗时M)","[机器号] = \'" & lst(i) & "\'")

Chart.AxisX.SetValueLabel(i, lst(i))

Next