主题：写在哪？

 

 

示例二

假定表A的结构如下：

希望将其转换为表B，结构为：

转换代码为：

Dim dtb As New DataTableBuilder("表B")

dtb.AddDef("姓名", Gettype(String), 32)

For Each v As String In DataTables("表A").GetUniqueValues("","课程")

    dtb.AddDef(v, Gettype(Double))

Next

dtb.Build()

For Each v As String In DataTables("表A").GetUniqueValues("","姓名")

    Dim dr1 As DataRow = DataTables("表B").AddNew()

    dr1("姓名") = v

    For Each dr2 As DataRow In DataTables("表A").DataRows

        If dr2("姓名") = v Then

            dr1(dr2("课程")) = dr2("分数")

        End If

    Next

Next

MainTable = Tables("表B")