how to control serial port of client in asp.net?

[Adrian Chen]

please help me! I come across a problem.
Now I develop a finger print management system which is based on B/S.When
users click a button in the web pages, a device connected to the COM1 serial
port of the client machine starts to work.
Now I wrote the code which is in charge of serial communication in the
..aspx.cx pages, but then I found that when uses click the button, it is the
server's serial port that starts to work,not the clients!!

who can tell me how I could control the serial port communication in client
through asp.net?

I am very nervous about it now!

Thank you very much!!!

[Mark Rae [MVP]]

Re: how to control serial port of client in asp.net?

"Adrian Chen" <aoopopopo@126. comwrote in message
news:OdlUy414IH A.408@TK2MSFTNG P06.phx.gbl...

Now I wrote the code which is in charge of serial communication in the
.aspx.cx pages, but then I found that when uses click the button, it is
the server's serial port that starts to work,not the clients!!

Obviously - ASP.NET runs on the server, not the client...

Who can tell me how I could control the serial port communication in
client through ASP.NET?

You have no chance whatsoever of doing this natively. All modern browsers
are designed specifically to prevent this sort of interaction with the
hardware / software on which the client browser is installed and running.

Your only option would be to use an ActiveX control. However, this would
restrict the browser to IE, and would mean that you will need to ramp the
browser security right down just to get it to work. I can't recommend this
at all.


--
Mark Rae
ASP.NET MVP

http://www.markrae.net

[Munna]

Re: how to control serial port of client in asp.net?

Hi,

"then I found that when uses click the button, it is the
server's serial port that starts to work,not the clients!! " ...

well asp.net code run all in server side...
client machine got only the htmls.. you need some kind of rich client
facility
like activex or flash...

Best of luck

-----------
Munna

https://www.munna.shatkotha.com/blog

https://www.munna.shatkotha.com

https://www.shatkotha.com

[Adrian Chen]

Re: how to control serial port of client in asp.net?

Mark Rae, thank you very much!



"Mark Rae [MVP]" <mark@markNOSPA Mrae.net>
??????:uUtIV$14 IHA.3828@TK2MSF TNGP02.phx.gbl. ..

"Adrian Chen" <aoopopopo@126. comwrote in message
news:OdlUy414IH A.408@TK2MSFTNG P06.phx.gbl...
>

>Now I wrote the code which is in charge of serial communication in the
>.aspx.cx pages, but then I found that when uses click the button, it is
>the server's serial port that starts to work,not the clients!!

>
Obviously - ASP.NET runs on the server, not the client...
>

>Who can tell me how I could control the serial port communication in
>client through ASP.NET?

>
You have no chance whatsoever of doing this natively. All modern browsers
are designed specifically to prevent this sort of interaction with the
hardware / software on which the client browser is installed and running.
>
Your only option would be to use an ActiveX control. However, this would
restrict the browser to IE, and would mean that you will need to ramp the
browser security right down just to get it to work. I can't recommend this
at all.
>
>
--
Mark Rae
ASP.NET MVP

http://www.markrae.net

>

[Adrian Chen]

Re: how to control serial port of client in asp.net?

Munna, thank you very much!



"Munna" <munnaonc@gmail .com>
??????:db3e5494-f452-4f6d-9ec8-098a7862dc18@b1 g2000hsg.google groups.com...

Hi,
>
"then I found that when uses click the button, it is the
server's serial port that starts to work,not the clients!! " ...
>
well asp.net code run all in server side...
client machine got only the htmls.. you need some kind of rich client
facility
like activex or flash...
>
Best of luck
>
-----------
Munna
>

https://www.munna.shatkotha.com/blog

https://www.munna.shatkotha.com

https://www.shatkotha.com

>