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-- 发布时间：2021/7/21 16:35:00
-- 流水帐
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老师这个项目库存数量老是不对，然后我是外部数据表的，每次加载最后一天的数据。
-- 发布时间：2021/7/21 16:38:00
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重置列后检查数据没有问题。模仿原项目，做个功能一样有问题的测试项目发过来测试
-- 发布时间：2021/7/21 17:21:00
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老师你再帮我看看，我就是下面这个代码，其它没问题就是全部数据加载出来的他都计算对的，就是没加载就会计成库存数量0
Select Case e.DataCol.Name
Case "编号","入库数量","出库数量","入库件数","出库件数"
Dim dr As DataRow
Dim mr As DataRow = e.DataRow
Dim drs As List(of DataRow)
Dim jk As Integer
Dim ck As Integer
Dim jk1 As Integer
Dim ck1 As Integer
dr = e.DataTable.SQLFind("[_SortKey] < " & mr("_SortKey") & " And [编号] = \'" & mr("编号") & "\'", "[_SortKey] Desc")
If dr Is Nothing Then \'如果是第一行,计算结存
jk = DataTables("库存表").SQLCompute("Sum(入库数量)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & mr("编号") & "\'")
jk1 = DataTables("库存表").SQLCompute("Sum(入库件数)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & mr("编号") & "\'")
ck = DataTables("库存表").SQLCompute("Sum(出库数量)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & mr("编号") & "\'")
ck1 = DataTables("库存表").SQLCompute("Sum(出库件数)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & mr("编号") & "\'")
mr("库存数量") = e.DataRow("入库数量") - e.DataRow("出库数量") + jk - ck
mr("库存件数") = e.DataRow("入库件数") - e.DataRow("出库件数") + jk1 - ck1
dr = mr
End If
drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [编号] = \'" & dr("编号") & "\'", "[_SortKey]")
For i As Integer = 1 To drs.Count - 1
drs(i)("库存数量") = drs(i-1)("库存数量") + drs(i)("入库数量") - drs(i)("出库数量")
drs(i)("库存件数") = drs(i-1)("库存件数") + drs(i)("入库件数") - drs(i)("出库件数")
Next
If e.DataCol.Name = "编号" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then \'如果修改的是产品列
dr = e.DataTable.SQLFind("[_SortKey] < " & mr("_SortKey") & " And [编号] = \'" & e.OldValue & "\'", "[_SortKey] Desc") \'找出旧产品的上一行
If dr Is Nothing Then \'如果不存在上一行,那么本行就是旧产品的第一行,由于已经被修改为新产品,需要找出旧产品现在的第一行
dr = e.DataTable.SQLFind("[编号] = \'" & e.OldValue & "\'", "[_SortKey]") \'找出旧产品现在的第一行
If dr IsNot Nothing Then \'如果找到,计算库存
jk = DataTables("库存表").SQLCompute("Sum(入库数量)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & e.OldValue & "\'")
jk1 = DataTables("库存表").SQLCompute("Sum(入库件数)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & e.OldValue & "\'")
ck = DataTables("库存表").SQLCompute("Sum(出库数量)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & e.OldValue & "\'")
ck1 = DataTables("库存表").SQLCompute("Sum(出库件数)","[_SortKey] < " & mr("_SortKey") & " And 编号 = \'" & e.OldValue & "\'")
dr("库存数量") = dr("入库数量") - dr("出库数量") + jk - ck
dr("库存件数") = dr("入库件数") - dr("出库件数") + jk1 - ck1
End If
End If
If dr IsNot Nothing Then
drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [编号] = \'" & dr("编号") & "\'", "[_SortKey]")
For i As Integer = 1 To drs.Count - 1
drs(i)("库存数量") = drs(i-1)("库存数量") + drs(i)("入库数量") - drs(i)("出库数量")
drs(i)("库存件数") = drs(i-1)("库存件数") + drs(i)("入库件数") - drs(i)("出库件数")
Next
End If
End If
End Select
-- 发布时间：2021/7/21 17:27:00
--
SQLFind改为Find