主题：[求助] 怎么把两数组的值，赋给另一值

Dim dtt As DataTable = DataTables("入库单明细2_入库明细表")

Dim Total As Integer

Dim Customers As List(Of String)

Customers = dtt.GetValues("商品编号")

Dim cmd As New SQLCommand

Dim dt As DataTable

Dim dth As DataTable

cmd.CommandText = "Select 入库数量,商品编号 From {商品信息} "

dt = cmd.ExecuteReader

Dim Products As List(Of String)

For Each Customer As String In Customers

    Products = dt.GetValues("入库数量","商品编号 =  '" & customer & "'")

    Total = dtt.Compute("Sum(数量)", "[商品编号] = '" & Customer & "'")

 

    cmd.CommandText = "Select [_Identify],入库数量 From {商品信息} Where 商品编号 = '" &  Customer & "'"

    dth = cmd.ExecuteReader(True) 

    For Each dr As DataRow In dth.DataRows

        For Each dttt As Integer In products

            'Output.Show(Customer & ":" & dttt + Total )   '这个显示正常，能得到正常数值，这个计算出  : dttt 为入库明细表数量 +  Total后台商品信息表入库数量  两个相加为最新库存量

            dr("入库数量") = dttt + Total              '现要把相加的最新库存量,更新到后台数据,这个问题要怎么处理，

            cmd.ExecuteScalar  '更新后台总数量

        Next

        dt.Save()

    Next

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