<%
Function DisplayRecords()
Dim sql, conn, rs
sql = "select [id],[st],[nd] from [table]"
Set conn = Server.CreateObject("ADODB.Connection")
conn.Open "DRIVER={Microsoft Access Driver (*.mdb)};DBQ="&Server.MapPath("Database.mdb")
Set rs = Server.CreateObject("ADODB.Recordset")
rs.Open sql,conn,1,3
If Not rs.EOF Then
Dim temp
temp = "<table width=""90%"" align=""center"""
temp = temp & " border=""1"" bordercolor=""silver"""
temp = temp & " cellspacing=""2"" cellpadding=""0"">"
temp = temp & "<tr bgcolor=""#CCDDEE""><td width=""5%"""
temp = temp & ">ID</td><td>操作</td>"
temp = temp & "<td>數值</td></tr>"
While Not rs.EOF
temp = temp & "<tr><td bgcolor=""#CCDDEE"">"
temp = temp & rs("ID") & "</td><td>" & rs("st")
temp = temp & "</td><td>" & rs("nd")
temp = temp & "</td></tr>"
rs.MoveNext
Wend
temp = temp & "</table>"
DisplayRecords = temp
Else
DisplayRecords = "Data Not Available."
End If
rs.Close
conn.Close
Set rs = Nothing
Set conn = Nothing
End Function
'寫入緩衝
Function DisplayCachedRecords(Secs)
Dim retVal, datVal, temp1
retVal = Application("cache_demo")
datVal = Application("cache_demo_date")
If datVal = "" Then
datVal = DateAdd("s",Secs,Now)
End If
temp1 = DateDiff("s", Now, datVal)
If temp1 > 0 And retVal <> "" Then
DisplayCachedRecords = retVal
Response.Write "<b><font color=""green"">利用緩衝讀取資料"
Response.Write " ... (" & temp1 & " 秒剩餘)</font></b>"
Response.Write "<br><br>"
Else
Dim temp2
temp2 = DisplayRecords()
Application.Lock
Application("cache_demo") = temp2
Application("cache_demo_date") = DateAdd("s",Secs,Now)
Application.UnLock
DisplayCachedRecords = temp2
Response.Write "<b><font color=""red"">重新整理緩衝顯示 ..."
Response.Write "</font></b><br><br>"
End If
End Function
%>
<html>
<head>
<title>利用緩衝從資料庫---讀取資料</title>
<style>
body, p, td { font-family:"宋體"; font-size:12px; }
td {padding: 5px; }
</style>
</head>
<body>
<%
Dim t1, t2
t1 = Timer
Response.Write DisplayCachedRecords(60)
t2 = Timer
%>
<p align="center">
停留時間: <%= Left((CDbl((t2 - t1) * 1000.0)), 5) %> ms
</p>
</body>
</html>
