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19 Basic Tips for ASP (2)

Source: Internet
Author: User
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Tips for the following example:


<%


Fori=1 to Request.fron ("INPUT1"). Count


Response.Write Request. From ("Input1") (I) & "<br>"


Next


%>


if INPUT1 has two values, it shows


* If the index specified is not used to read which. Available


〈%


for each item request. From ("input"))


repomse.write Item & "<br>"


Next


%>


can also be used for each x in Tewuest. From "repeatedly gets the input values for all fields.


  


<% for each x in request. Form%>


request. From (<%=x%) =<%=request. Form


(x)%> <br>


<% Next%>


  


  


12. How to obtain the client TCP/IP port:


such as: TCP/IP port is <%=request ("Server_port")%>


uses Server_port to receive connection port information for HTTP request


  


  


13. Using Http_accept_language HTTP header information, you can get the user-side language


environment.


The following example to determine the user side of the language environment, give a different page.


<% language=request.servervariables ("Http_accept_language")


if language= "en" then%>


<!--#include file= "english.asp" >


<% Else%>


<!--#include file= "china.asp" >


<% End if%>


  


14. Home Page Retention Term


If the client browser browses this home page for the duration of a home page reservation, the original

The home page content on the
hard drive will be displayed.


Response.expires[=number]


number is the retention period for the Record Data box (PAGE box), in minutes.


or:


Response.expiresabsolute[=[date][time]]


: Set a home page retention period to a certain date.


  


15. Connect to the specified URL address


such as: you want to confirm that the user has seen the index.htm, you can check whether you have seen, such as


is not confirmed, automatically connects to the home page


<%


If not session ("Been_to_home_page") then


Response.Redirect "Index.asp"


End If


%>


  


16. To judge whether to return to this page or to enter
for the first time

<%


if User_has_been_here_before then


Response.Write "<h3 align=center> Welcome back


Again "


Else


Response.Write "welcome!"


End If


%>


  


  


17. Display a picture in a database with a super connection


  


<%


set Conn=server.creatobject ("Adodb.connection")


Conn.Open "Myaddress"


Set Rs=conn.execute ("Select Name,tel,url,image from


myaddress ")


%>


  


<p>


<tabel>


<tr>


<% for i=0 to Rs.fields.count-1%>


<td>


<b>


<%=rs (i). Name%>


</b>


</td>


<% Next%>


</tr>


<% do and not rs.eof%>


<tr>


<% for i=0 to Rs.fields.count-1%>


<td valign =top>


<%


if RS (i) name= "image" then


Response.Write "<img src=" "&rs (i) &" ">"


Else


if RS (i). name= "url" then


Response.Write "<a href=" "&rs (i) &" ">" &rs (i) & "</a>"


Else


Response.Write rs (i)


End If


End If


%>


</td>


<%next%>


</tr>


<% Rs.movenext


Loop


Rs.close


Conn.close


%>


</html>


  


  


18. Using ASP to obtain browser information


<%


set A=server.creatobject ("MSWC. BrowserType ")


msg= "The browser you are using is:" +a.browser+ "version" +a.version


%>


<%=msg%>


  


  


19. How the ASP accesses cookies (using response and request)


is as follows:


Write cookies:


response.cookies ("Coookies name to write")


= "Pending Write Data"


Read cookies:


Read the data =request.cookies ("Cookies name to be read")


  

Note
when
* Write

@ Write cookies to the Response.Cookies program section must be placed in the <html> tag


before. And you can't have any other HTML code


@ Cookies must use expires to set the expiration date, the cookies can really


is written to the client hard disk. such as:


response.cookies ("name to write"). expires= #july 1,1998#


or Response.Cookies ("name"). expires=date+365





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