dim objRs as New Recordset
dim objCn as New connection
dim strSql as string
objCn.ConnectionString="fileDsn=student.dsn;User_Id=sa;PassWord=123"
objcn.open
strSql="SELECT * FROM Student_info"
objRs.Open strSql ,objCn,adOpenKeyset, adLockOptimistic
'在這判斷，若為空則告知用戶并退出該模塊操作就行了
if objRS.RecordsetCount=0 then
msgbox "學籍信息不存在，請補充后在操作！"
objRs.Close
Set objRs=Nothing
exit sub '這一步可別忘了，要不然還得報錯，原因是依舊執行了以后的操作
end if (){
}