20 very useful examples in ASP programming

1. How to use ASP to determine the virtual physical path of your website

Answer: Using the MapPath method

＜ p align="center" ＞＜ font size="4" face="Arial" ＞＜ b ＞
The Physical path to this virtual website is:
＜ /b ＞＜ /font ＞
＜ font color="#FF0000" size="6" face="Arial" ＞
＜ %= Server.MapPath("\")% ＞
＜ /font ＞＜ /p ＞

2. How do I know the browser used by the user?

Answer: Use the Request object method

strBrowser=Request.ServerVariables("HTTP_USER_AGENT")
If Instr(strBrowser,"MSIE") ＜ ＞ 0 Then
　　Response.redirect("ForMSIEOnly.htm")
Else
　　Response.redirect("ForAll.htm")
End If

3. How to calculate the average number of repeated visits per day

Answer: the solution

＜ % startdate=DateDiff("d",Now,"01/01/1990")
if strdate＜ 0 then startdate=startdate*-1
avgvpd=Int((usercnt)/startdate) % ＞

Show results

＜ % response.write(avgvpd) % ＞
that is it.this page have been viewed since November 10,1998

4. How to display random images

＜ % dim p,ppic,dpic
ppic=12
randomize
p=Int((ppic*rnd)+1)
dpic="graphix/randompics/"&p&".gif"
% ＞
显示
＜ img src="＜ %=dpic% ＞" ＞

5. How to get back to the previous page

For:

＜ a href="＜ %=request.serverVariables("Http_REFERER")% ＞" ＞preivous page＜ /a ＞ 或用图片如：＜ img src="arrowback.gif" alt="＜ %=request.serverVariables("HTTP_REFERER")% ＞" ＞