how to remove escape sequence from string while telnet to a HP Switch in C#

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I am trying to telnet a HProCurve J9279A Switch but i am getting some unknown characters in the login prompt when i am writing the response in text file . Please let me know how to handle this and remove these junk characters from string . I can say these are some escape sequense which in not recognized by string .

Please register your products now at: www.ProCurve.com

[1;24r[1;1H[24;1HUsername: [?25h[24;1H[?25h[24;11H[24;11H[?25h[24;11H

Please help to remove thse unknown characters in above strings and command outputs. any help will be appreciated

Posted 12-Aug-14 19:21pm

superselector

Updated 12-Aug-14 19:24pm

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Fredrik Bornander · Answer 1 · 2014-08-12T20:41:00

That looks like VT100 escape codes (but I could be wrong, it's been a while since I needed to know things like this :)).

Get a VT100 ANSI parser library and feed the string to that, I'd try using the libvt100 C# library[^], it as an easy to use parse interface.

Or if you've got way too much time on your hands, hand-roll your own implementation according to a VT100 and VT52 escape codes chart[^].

Hope this helps,
Fredrik