此主题相关图片如下：结存.png

Select Case e.DataCol.Name
    Case "商品编号","商品名称"
        Dim dr As DataRow
        Dim mr As DataRow = e.DataRow
        Dim drs As List(of DataRow)
        dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [商品编号] = \'" & mr("商品编号") & "\'", "[_SortKey] Desc")
        If dr Is Nothing Then
            mr("结存_数量") = mr("入库_数量")+mr("期初_数量")+ mr("出库_数量")
            mr("结存_金额") = mr("入库_金额")+mr("期初_金额")- mr("出库_金额")
            dr = mr
        End If
        drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [商品编号] = \'" & dr("商品编号") & "\'", "[_SortKey]")
        For i As Integer = 1 To drs.Count - 1
            drs(i)("结存_数量") = drs(i-1)("结存_数量") + drs(i)("入库_数量") - drs(i)("出库_数量")
            drs(i)("结存_金额") = drs(i-1)("结存_金额") + drs(i)("入库_金额") - drs(i)("出库_金额")
        Next
        If e.DataCol.Name = "商品编号" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
            dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [商品编号] = \'" & e.OldValue & "\'", "[_SortKey] Desc")
            If dr Is Nothing Then
                dr = e.DataTable.Find("[商品编号] = \'" & e.OldValue & "\'", "[_SortKey]")
                If dr IsNot Nothing Then
                    dr("结存_数量") = dr("入库_数量")- dr("出库_数量")
                    dr("结存_金额") = dr("入库_金额")- dr("出库_金额")
                End If
            End If
            If dr IsNot Nothing Then
                drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [商品名称] = \'" & dr("商品名称") & "\'", "[_SortKey]")
                For i As Integer = 1 To drs.Count - 1
                    drs(i)("结存_数量") = drs(i-1)("结存_数量") + drs(i)("入库_数量") - drs(i)("出库_数量")
                    drs(i)("结存_金额") = drs(i-1)("结存_金额") + drs(i)("入库_金额") - drs(i)("出库_金额")
                Next
            End If
        End If
End Select

老师，结存_数量列结存_金额列没有结果

此主题相关图片如下：期初.png

期初数据不统计到结存_数据列和结存_金额列中

 你代码上没有加入期初数量和期初金额的计算。

 比如，你的代码要这样写

drs(i)("结存_数量") = drs(i-1)("结存_数量") + drs(i)("期初_数量") + drs(i)("入库_数量") - drs(i)("出库_数量")
drs(i)("结存_金额") = drs(i-1)("结存_金额") + drs(i)("期初_数量") + drs(i)("入库_金额") - drs(i)("出库_金额")

Select Case e.DataCol.Name
    Case "商品编号","商品名称"
        Dim dr As DataRow
        Dim mr As DataRow = e.DataRow
        Dim drs As List(of DataRow)
        dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [商品编号] = \'" & mr("商品编号") & "\'", "[_SortKey] Desc")
        If dr Is Nothing Then
            mr("结存_数量") = math.Abs(mr("入库_数量")+mr("期初_数量")+ mr("出库_数量"))
            mr("结存_金额") = math.Abs(mr("入库_金额")+mr("期初_金额")- mr("出库_金额"))
            dr = mr
        End If
        drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [商品编号] = \'" & dr("商品编号") & "\'", "[_SortKey]")
        For i As Integer = 1 To drs.Count - 1
            drs(i)("结存_数量") = math.Abs(drs(i-1)("结存_数量") + drs(i)("期初_数量") + drs(i)("入库_数量") - drs(i)("出库_数量"))
            drs(i)("结存_金额") = math.Abs(drs(i-1)("结存_金额") + drs(i)("期初_金额") + drs(i)("入库_金额") - drs(i)("出库_金额"))
        Next
        If e.DataCol.Name = "商品编号" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
            dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [商品编号] = \'" & e.OldValue & "\'", "[_SortKey] Desc")
            If dr Is Nothing Then
                dr = e.DataTable.Find("[商品编号] = \'" & e.OldValue & "\'", "[_SortKey]")
                If dr IsNot Nothing Then
                    dr("结存_数量") = math.Abs(dr("期初_数量") + dr("入库_数量")- dr("出库_数量"))
                    dr("结存_金额") = math.Abs(dr("期初_金额") + dr("入库_金额")- dr("出库_金额"))
                End If
            End If
            If dr IsNot Nothing Then
                drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [商品名称] = \'" & dr("商品名称") & "\'", "[_SortKey]")
                For i As Integer = 1 To drs.Count - 1
                    drs(i)("结存_数量") = math.Abs(drs(i-1)("结存_数量") + drs(i)("期初_数量") + drs(i)("入库_数量") - drs(i)("出库_数量"))
                    drs(i)("结存_金额") = math.Abs(drs(i-1)("结存_金额") + drs(i)("期初_金额") + drs(i)("入库_金额") - drs(i)("出库_金额"))
                Next
            End If
        End If
End Select