老师，如果再增加一个图系，是这样加吗？
Dim dic1 As new SortedDictionary(Of Date, Double)
Dim dic2 As new SortedDictionary(Of Date, Double)
Dim dic3 As new SortedDictionary(Of Date, Double)
For Each r As Row In e.Form.controls("Table数据").Table.Rows
If r.IsNull("date") = False Then
If dic1.ContainsKey(r("date")) = False Then
dic1.add(r("date"), r("value"))
dic2.add(r("date"), 0)
End If
End If
Next
For Each r As Row In e.Form.controls("Table1").Table.Rows
If r.IsNull("date") = False Then
If dic1.ContainsKey(r("date")) = False Then
dic1.add(r("date"), 0)
End If
If dic2.ContainsKey(r("date")) = False Then
dic2.add(r("date"), r("value"))
Else
dic2(r("date")) = r("value")
End If
End If
Next
For Each r As Row In e.Form.controls("Table3").Table.Rows
If r.IsNull("date") = False Then
If dic3.ContainsKey(r("date")) = False Then
dic3.add(r("date"), 0)
End If
If dic2.ContainsKey(r("date")) = False Then
dic2.add(r("date"), r("value"))
Else
dic2(r("date")) = r("value")
End If
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
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
Chart.SeriesList2.Clear
Chart.AxisX.ClearValueLabel
Series = Chart.SeriesList.Add() '增加一个图系
Series.Length = dic1.Count '设置图系的长度
Dim i As Integer = 0
Dim pkey As Date
For Each key As Date In dic1.keys
If dic1(key) > 0 Then
Series.X(i) = i '指定水平坐标
Series.Y(i) = dic1(key) '指定垂直坐标
Chart.AxisX.SetValueLabel(i, format(key, "yyyy-MM-dd")) '指定字符表示
ElseIf i > 0 Then
Series.X(i) = i '指定水平坐标
Series.Y(i) = dic1(pkey) '指定垂直坐标
Chart.AxisX.SetValueLabel(i, format(key, "yyyy-MM-dd")) '指定字符表示
End If
i += 1
pkey = key
Next
Chart.AxisX.ClearValueLabel
Series = Chart.SeriesList2.Add() '增加一个图系
Series.Length = dic2.Count '设置图系的长度
i = 0
For Each key As Date In dic2.keys
If dic2(key) > 0 Then
Series.X(i) = i '指定水平坐标
Series.Y(i) = dic2(key) '指定垂直坐标
ElseIf i > 0
Series.X(i) = i '指定水平坐标
Series.Y(i) = dic2(pkey) '指定垂直坐标
End If
Chart.AxisX.SetValueLabel(i, format(key, "yyyy-MM-dd")) '指定字符表示
i += 1
pkey = key
Next
Chart.AxisX.ClearValueLabel
Series = Chart.SeriesList3.Add() '增加一个图系
Series.Length = dic3.Count '设置图系的长度
i = 0
For Each key As Date In dic3.keys
If dic3(key) > 0 Then
Series.X(i) = i '指定水平坐标
Series.Y(i) = dic3(key) '指定垂直坐标
ElseIf i > 0
Series.X(i) = i '指定水平坐标
Series.Y(i) = dic3(pkey) '指定垂直坐标
End If
Chart.AxisX.SetValueLabel(i, format(key, "yyyy-MM-dd")) '指定字符表示
i += 1
pkey = key
Next
Chart.AxisX.AnnoRotation = -45
Chart.AxisX.AnnoWithLabels = True '启用字符标示
加好友 
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Post By：2017/6/22 10:55:00 [只看该作者]
