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Dim dt1 As DataTable = DataTables("产品")
Dim dt2 As DataTable = DataTables("bom")
Dim dt3 As DataTable = DataTables("材料")
For Each dr1 As DataRow In dt1.Select("")
Dim sum As Double = 0
For Each dr2 As DataRow In dt2.Select("产品代码 = '" & dr1("产品代码") & "'")
For Each dr3 As DataRow In dt3.Select("材料代码 = '" & dr2("材料代码") & "'")
sum += dr2("产品用料") * dr3("材料单价")
Next
Next
dr1("材料成本") = sum
Next
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Post By：2017/10/10 8:48:00 [显示全部帖子]
