send F12 to a TELNET 5250 session?

Hi,
In C# (or vb.net), with socket, I established a telnet session with a 5250 terminal (as400)
What message have I to send to it in order to send the F12 command?
I tried with hex(134) but is not the corret one.

thanks
bobdylan75Asked:
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Meir RivkinFull stack Software EngineerCommented:
can u post some code just to get an idea?
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Meir RivkinFull stack Software EngineerCommented:
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bobdylan75Author Commented:
th answer is:
ESC + '=' or CHR(27) +"="
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tliottaCommented:
Be aware that the proposed solution might or might not work at any given time in the future. A "telnet" connection might result in a variety of screens that must be navigated before any programmed interaction can begin. Or a different device type might be assigned that has a different requirement for "F12" (e.g., a VT100 or 3270 device). Or other complications might arise.

Seriously, communication through one of the servers that are provided for interaction with other platforms will be much more reliable for the long term.

Tom
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bobdylan75Author Commented:
Not for my project, thanks. Seriously. Thanks a lot.
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bobdylan75Author Commented:
Sorry I try the solution by myself
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