- Foxtable(狐表) (http://foxtable.com/bbs/index.asp)
-- 专家坐堂 (http://foxtable.com/bbs/list.asp?boardid=2)
---- [求助]水平表和垂直表转换 (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=158056)
-- 发布时间：2020/11/6 10:51:00
-- [求助]水平表和垂直表转换
此主题相关图片如下：2233.png
要把上表转换成下表要怎么弄
Dim
dtb
As
New
DataTableBuilder("表B")
dtb.AddDef("姓名", Gettype(String), 32)
For Each v As String In DataTables("表A").GetValues("课程")
dtb.AddDef(v, Gettype(Double))
Next
dtb.Build()
For Each v As String In DataTables("表A").GetValues("姓名")
Dim dr1 As DataRow = DataTables("表B").AddNew()
dr1("姓名") = v
For Each dr2 As DataRow In DataTables("表A").Select("姓名 = \'" & v & "\'")
dr1(dr2("课程")) = dr2("分数")
Next
Next
MainTable = Tables("表B")
dtb.AddDef("姓名", Gettype(String), 32)
For Each v As String In DataTables("表A").GetValues("课程")
dtb.AddDef(v, Gettype(Double))
Next
dtb.Build()
For Each v As String In DataTables("表A").GetValues("姓名")
Dim dr1 As DataRow = DataTables("表B").AddNew()
dr1("姓名") = v
For Each dr2 As DataRow In DataTables("表A").Select("姓名 = \'" & v & "\'")
dr1(dr2("课程")) = dr2("分数")
Next
Next
MainTable = Tables("表B")
-- 发布时间：2020/11/6 11:11:00
--
Dim dtb As New DataTableBuilder("表B")
dtb.AddDef("学期", Gettype(String), 32)
dtb.AddDef("科目", Gettype(String), 32)
For Each v As String In DataTables("表A").GetValues("姓名")
dtb.AddDef(v, Gettype(Double))
Next
dtb.Build()
For Each v As String In DataTables("表A").GetValues("学期")
For Each dc As DataCol In DataTables("表A").datacols
If dc.name <> "学期" AndAlso dc.name <> "姓名"
Dim dr1 As DataRow = DataTables("表B").AddNew()
dr1("学期") = v
dr1("科目") = dc.name
For Each v2() As String In DataTables("表A").GetValues("姓名|" & dc.name)
dr1(v2(0)) = v2(1)
Next
End If
Next
Next
MainTable = Tables("表B")
-- 发布时间：2020/11/6 13:46:00
--
表A是个统计表，有个分组统计生成的汇总行，For Each v As String In DataTables("表A").GetValues("姓名")，如何把汇总行取过来呢
-- 发布时间：2020/11/6 13:48:00
--
请截图说明
-- 发布时间：2020/11/6 14:25:00
--
Dim t1 As Table = Tables("表A")
Dim g As Subtotalgroup
t1.SubtotalGroups.Clear()
t1.GroupAboveData = False
t1.TreeVisible = False
t1.SpillNode = False
Dim g As Subtotalgroup
t1.SubtotalGroups.Clear()
t1.GroupAboveData = False
t1.TreeVisible = False
t1.SpillNode = False
g = New Subtotalgroup
g.Aggregate = AggregateEnum.Average
g.GroupOn = "*"
g.TotalOn = cs.trim(",")
g.Caption = "平均"
t1.SubtotalGroups.Add(g)
g.Aggregate = AggregateEnum.Average
g.GroupOn = "*"
g.TotalOn = cs.trim(",")
g.Caption = "平均"
t1.SubtotalGroups.Add(g)
t1.Subtotal()
此主题相关图片如下：5566.png
-- 发布时间：2020/11/6 14:36:00
--
Dim dtb As New DataTableBuilder("表B")
dtb.AddDef("学期", Gettype(String), 32)
dtb.AddDef("科目", Gettype(String), 32)
For Each v As String In DataTables("表A").GetValues("姓名")
dtb.AddDef(v, Gettype(Double))
Next
dtb.AddDef("平均", Gettype(Double))
dtb.Build()
For Each v As String In DataTables("表A").GetValues("学期")
For Each dc As DataCol In DataTables("表A").datacols
If dc.name <> "学期" AndAlso dc.name <> "姓名"
Dim dr1 As DataRow = DataTables("表B").AddNew()
dr1("学期") = v
dr1("科目") = dc.name
dim sum as double = 0
Dim Arys As List(Of String()) = DataTables("表A").GetValues("姓名|" & dc.name)
For Each v2() As String In Arys
dr1(v2(0)) = v2(1)
sum+=val(v2(1))
Next
dr1("平均") = sum / Arys.count
End If
Next
Next
MainTable = Tables("表B")
-- 发布时间：2020/11/6 17:02:00
--
Dim t1 As Table = Tables("统计表")
Dim i As Integer = t1.Rows.Count(True) - 1
Dim m1 As Double = Tables("统计表")(i,"数量")
Dim m1 As Double = Tables("统计表")(i,"数量")
提示错误：未将对象引用设置到对象的实例。
-- 发布时间：2020/11/6 17:15:00
--
Dim m1 As Double = Tables("统计表").rows(i,true)("数量")