专家坐堂-[求助]流水账Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

以文本方式查看主题

-  Foxtable(狐表)  (http://foxtable.com/bbs/index.asp)
--  专家坐堂  (http://foxtable.com/bbs/list.asp?boardid=2)
----  [求助]流水账  (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=91831)

--  作者：苏州老街
--  发布时间：2016/10/20 8:10:00
--  [求助]流水账

老师好，如果行等于零时下面代码计算出错。谢谢老师给予帮忙修改。

Select Case e.DataCol.Name
Case "方向","收入金额","支出金额"
Dim drs As List(of DataRow)
Dim Filter As String
Filter = "[_Identify] >= " & e.DataRow("_Identify") & " And [方向] = \'" & e.DataRow("方向") & "\'"
drs = e.DataTable.Select(Filter)

For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2

Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing

End If
Next
If e.DataCol.Name = "方向" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
Filter = "[_Identify] > " & e.DataRow("_Identify") & " And [方向] = \'" & e.OldValue & "\'"
drs = e.DataTable.Select(Filter)
For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2

Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing

End If
Next
End If
End Select

--  作者：有点蓝
--  发布时间：2016/10/20 8:41:00
--
请上例子测试

--  作者：苏州老街
--  发布时间：2016/10/20 9:24:00
--
老师，好了。

--  作者：苏州老街
--  发布时间：2016/10/20 9:39:00
--

老师，我要另外增加一列"余额"列，余额=收入金额-支出金额余列数据也是在最后一行显示
Select Case e.DataCol.Name
Case "方向","收入金额","支出金额"
Dim drs As List(of DataRow)
Dim Filter As String
Filter = "[_Identify] >= " & e.DataRow("_Identify") & " And [方向] = \'" & e.DataRow("方向") & "\'"
drs = e.DataTable.Select(Filter)

For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2

Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing

End If
Next
If e.DataCol.Name = "方向" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
Filter = "[_Identify] > " & e.DataRow("_Identify") & " And [方向] = \'" & e.OldValue & "\'"
drs = e.DataTable.Select(Filter)
For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2

Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing

End If
Next
End If
End Select

--  作者：有点蓝
--  发布时间：2016/10/20 9:55:00
--

Select Case e.DataCol.Name
Case "方向","收入金额","支出金额"
Dim drs As List(of DataRow)
Dim Filter As String
Filter = "[_Identify] >= " & e.DataRow("_Identify") & " And [方向] = \'" & e.DataRow("方向") & "\'"
drs = e.DataTable.Select(Filter)

For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2
dr("余额") = Val2 - Val1

Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing
dr("余额") = Nothing

End If
Next
If e.DataCol.Name = "方向" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
Filter = "[_Identify] > " & e.DataRow("_Identify") & " And [方向] = \'" & e.OldValue & "\'"
drs = e.DataTable.Select(Filter)
For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2
dr("余额") = Val2 - Val1
Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing
dr("余额") = Nothing
End If
Next
End If
End Select

--  作者：苏州老街
--  发布时间：2016/10/20 10:17:00
--

此主题相关图片如下：图像 1.png

--  作者：苏州老街
--  发布时间：2016/10/20 11:43:00
--

老师，我要余额列数据显示在最后一行。
下载信息  [文件大小：   下载次数： ]
点击浏览该文件:统计.table

[此贴子已经被作者于2016/10/20 11:44:10编辑过]

--  作者：有点蓝
--  发布时间：2016/10/20 11:43:00
--

Select Case e.DataCol.Name
Case "方向","收入金额","支出金额"
Dim drs As List(of DataRow)
Dim Filter As String
Filter = "[_Identify] >= " & e.DataRow("_Identify") & " And [方向] = \'" & e.DataRow("方向") & "\'"
drs = e.DataTable.Select(Filter)

For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2
Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing
End If
Next
If e.DataCol.Name = "方向" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
Filter = "[_Identify] > " & e.DataRow("_Identify") & " And [方向] = \'" & e.OldValue & "\'"
drs = e.DataTable.Select(Filter)
For i As Integer = 0 To drs.Count - 1
Dim dr = drs(i)
If i = drs.Count - 1 Then
Filter = "[_Identify] <= " & dr("_Identify") & " And [方向] = \'" & dr("方向") & "\'"
Dim Val1 As Double = e.DataTable.Compute("Sum(收入金额)",Filter)
Dim Val2 As Double = e.DataTable.Compute("Sum(支出金额)",Filter)

dr("累计收入") = Val1
dr("累计支出") = Val2
Else
dr("累计收入") = Nothing
dr("累计支出") = Nothing
End If
Next
End If
Dim dr2 As DataRow = e.DataTable.Find("方向 is not nothing","[_Identify] desc")
Dim V1 = e.DataTable.Compute("Sum(累计收入)","累计收入 > 0")
Dim V2 = e.DataTable.Compute("Sum(累计支出)","累计支出 > 0")
e.DataTable.ReplaceFor("余额", Nothing)
dr2("余额") = V2 - V1

End Select

--  作者：苏州老街
--  发布时间：2016/10/20 12:03:00
--

老师，重置列报错

.NET Framework 版本：2.0.50727.3053
Foxtable 版本：2016.7.29.1
错误所在事件：表，表A， DataColChanged
详细错误信息：
Exception has been thrown by the target of an invocation.
Cannot find column [nothing].

--  作者：有点蓝
--  发布时间：2016/10/20 14:17:00
--
汗，后面的代码改为

Dim dr2 As DataRow = e.DataTable.Find("方向 is not null","[_Identify] desc")
Dim V1 = e.DataTable.Compute("Sum(累计收入)","累计收入 > 0")
Dim V2 = e.DataTable.Compute("Sum(累计支出)","累计支出 > 0")
e.DataTable.ReplaceFor("余额", Nothing)
dr2("余额") = V2 - V1