主题：[求助]两列数据求对比思路

比如A列有123   找出B列的 123 ?

dim ls as new List(of string)

dim dt as datatable = datatables("表A")
for each dr as datarow in dtdatarows

     dim dr1 as datarow  = dt.find("B列='" & dr("A列") & "'")

     if dr1 isnot nothing then

         if ls.Contains(dr("A列"))=false then

            ls.add(dr("A列"))

         end if

     end if

     dim dr2 as datarow  = dt.find("A列='" & dr("B列") & "'")

     if dr2 isnot nothing then

for each s as string in ls

   output.show(s)

next

到命令窗口执行

基础知识至少要掌握