--
Dim dr As Row = Tables("表A").Current
If dr IsNot Nothing AndAlso dr.IsNull("第二列") = False Then
Dim str() As String = dr("第二列").Split(",")
For Each s As String In str
Dim drnew As DataRow = DataTables("表B").AddNew
drnew("第一列") = dr("第一列")
drnew("第二列") = s
Next
End If