主题：加载关联表的数据遇到的问题

dim barows as list (of datarow) =datatables("表A").select("[编号] <>''")
dim a as string
for each b as datarow in barows
 a = " [编号] = '"& b("编号") & " ' " & " or "  & a
next
a =a.remove(a.length-4)
datatables("表C").loadfilter = a
datatables("表c").load()