ASCII Problem in VB.Net no character greater than 127
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Bryan O. Zarzuel
#1 / 8
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 ASCII Problem in VB.Net no character greater than 127 Hi guys, I'm new here. I searched for a similar problem to this
before asking but didn't find anything so I'm posting
this question.
In VB.Net, I'm using the RS232 class I got from MSDN to
access the serial port.
I'm trying to output &HFE by using Write(chr(254))
Problem is, it always outputs as 3F (127) so I tried to
loop through all the ASCII codes (0 to 255) and looked at
the data through a port monitor. It showed that all
outputs greater than 127 defaulted to 127.
I thought it was a problem with my system (WinXP Pro SP1)
so I wrote a little program in QBASIC. I can output up to
255 in QBASIC.
So now, my suspect is the encoding. Unfortunately, I only
know little about Encoding in VB.Net. Can you guys help
me out? Thanks.
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| Wed, 14 Sep 2005 11:50:50 GMT |
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Michael Picku
#2 / 8
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ASCII Problem in VB.Net no character greater than 127 Look at the definition of ASCIIEncoding in the Framework. It is 0 to 127. Mike Pickus
Quote: > Hi guys, > I'm new here. I searched for a similar problem to this
> before asking but didn't find anything so I'm posting
> this question.
> In VB.Net, I'm using the RS232 class I got from MSDN to
> access the serial port.
> I'm trying to output &HFE by using Write(chr(254))
> Problem is, it always outputs as 3F (127) so I tried to
> loop through all the ASCII codes (0 to 255) and looked at
> the data through a port monitor. It showed that all
> outputs greater than 127 defaulted to 127.
> I thought it was a problem with my system (WinXP Pro SP1)
> so I wrote a little program in QBASIC. I can output up to
> 255 in QBASIC.
> So now, my suspect is the encoding. Unfortunately, I only
> know little about Encoding in VB.Net. Can you guys help
> me out? Thanks.
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| Wed, 14 Sep 2005 19:52:52 GMT |
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michk
#3 / 8
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ASCII Problem in VB.Net no character greater than 127 Sorry, if its > 127 (0x7f) then it is not ASCII. This is by design. If you want codes beyong 127 then you need to either treat it as
binary (which it appears to be?) or treat it as some other encoding.
--
MichKa [MS]
This posting is provided "AS IS" with
no warranties, and confers no rights.
Quote: > Hi guys, > I'm new here. I searched for a similar problem to this
> before asking but didn't find anything so I'm posting
> this question.
> In VB.Net, I'm using the RS232 class I got from MSDN to
> access the serial port.
> I'm trying to output &HFE by using Write(chr(254))
> Problem is, it always outputs as 3F (127) so I tried to
> loop through all the ASCII codes (0 to 255) and looked at
> the data through a port monitor. It showed that all
> outputs greater than 127 defaulted to 127.
> I thought it was a problem with my system (WinXP Pro SP1)
> so I wrote a little program in QBASIC. I can output up to
> 255 in QBASIC.
> So now, my suspect is the encoding. Unfortunately, I only
> know little about Encoding in VB.Net. Can you guys help
> me out? Thanks.
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| Wed, 14 Sep 2005 23:27:43 GMT |
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Tom Spin
#4 / 8
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ASCII Problem in VB.Net no character greater than 127 Hi Bryan, Try using the ChrW function to do this, just a thought. --
Remember: There's no place like 127.0.0.1
==============================================
Happy To Help,
Tom Spink
http://dotnetx.betasafe.com >> VB, VB.NET, C#, C++ Code
Happy Coding!!
Please respond to the newsgroups, so all can benefit.
One day
Quote: > Hi guys, > I'm new here. I searched for a similar problem to this
> before asking but didn't find anything so I'm posting
> this question.
> In VB.Net, I'm using the RS232 class I got from MSDN to
> access the serial port.
> I'm trying to output &HFE by using Write(chr(254))
> Problem is, it always outputs as 3F (127) so I tried to
> loop through all the ASCII codes (0 to 255) and looked at
> the data through a port monitor. It showed that all
> outputs greater than 127 defaulted to 127.
> I thought it was a problem with my system (WinXP Pro SP1)
> so I wrote a little program in QBASIC. I can output up to
> 255 in QBASIC.
> So now, my suspect is the encoding. Unfortunately, I only
> know little about Encoding in VB.Net. Can you guys help
> me out? Thanks.
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| Wed, 14 Sep 2005 23:47:21 GMT |
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michk
#5 / 8
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ASCII Problem in VB.Net no character greater than 127 Hi Tom, ChrW into an ASCIIEncoding will have the same problem.
--
MichKa [MS]
This posting is provided "AS IS" with
no warranties, and confers no rights.
Quote: > Hi Bryan, Try using the ChrW function to do this, just a thought. > --
> Remember: There's no place like 127.0.0.1
> ==============================================
> Happy To Help,
> Tom Spink
> http://dotnetx.betasafe.com >> VB, VB.NET, C#, C++ Code
> Happy Coding!!
> Please respond to the newsgroups, so all can benefit.
> One day
> > Hi guys,
> > I'm new here. I searched for a similar problem to this
> > before asking but didn't find anything so I'm posting
> > this question.
> > In VB.Net, I'm using the RS232 class I got from MSDN to
> > access the serial port.
> > I'm trying to output &HFE by using Write(chr(254))
> > Problem is, it always outputs as 3F (127) so I tried to
> > loop through all the ASCII codes (0 to 255) and looked at
> > the data through a port monitor. It showed that all
> > outputs greater than 127 defaulted to 127.
> > I thought it was a problem with my system (WinXP Pro SP1)
> > so I wrote a little program in QBASIC. I can output up to
> > 255 in QBASIC.
> > So now, my suspect is the encoding. Unfortunately, I only
> > know little about Encoding in VB.Net. Can you guys help
> > me out? Thanks.
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| Thu, 15 Sep 2005 02:15:34 GMT |
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Tom Spin
#6 / 8
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ASCII Problem in VB.Net no character greater than 127 Ah, I see. Just a thought. :) --
Remember: There's no place like 127.0.0.1
==============================================
Happy To Help,
Tom Spink
http://dotnetx.betasafe.com >> VB, VB.NET, C#, C++ Code
Happy Coding!!
Please respond to the newsgroups, so all can benefit.
One day
Quote: > Hi Tom, > ChrW into an ASCIIEncoding will have the same problem.
> --
> MichKa [MS]
> This posting is provided "AS IS" with
> no warranties, and confers no rights.
> > Hi Bryan, Try using the ChrW function to do this, just a thought.
> > --
> > Remember: There's no place like 127.0.0.1
> > ==============================================
> > Happy To Help,
> > Tom Spink
> > http://dotnetx.betasafe.com >> VB, VB.NET, C#, C++ Code
> > Happy Coding!!
> > Please respond to the newsgroups, so all can benefit.
> > One day
> > > Hi guys,
> > > I'm new here. I searched for a similar problem to this
> > > before asking but didn't find anything so I'm posting
> > > this question.
> > > In VB.Net, I'm using the RS232 class I got from MSDN to
> > > access the serial port.
> > > I'm trying to output &HFE by using Write(chr(254))
> > > Problem is, it always outputs as 3F (127) so I tried to
> > > loop through all the ASCII codes (0 to 255) and looked at
> > > the data through a port monitor. It showed that all
> > > outputs greater than 127 defaulted to 127.
> > > I thought it was a problem with my system (WinXP Pro SP1)
> > > so I wrote a little program in QBASIC. I can output up to
> > > 255 in QBASIC.
> > > So now, my suspect is the encoding. Unfortunately, I only
> > > know little about Encoding in VB.Net. Can you guys help
> > > me out? Thanks.
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| Thu, 15 Sep 2005 03:14:04 GMT |
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Dick Grie
#7 / 8
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ASCII Problem in VB.Net no character greater than 127 Hi, I'm not sure about the class that you obtained from MSDN, but you can use
NETComm.ocx (free) from my homepage -- this is equivalent to MSComm32. Or,
you can use the native VB .NET class that is in my book, and on the
accompanying CD-ROM. It supports both ASCII text and binary data.
Dick
--
Richard Grier (Microsoft Visual Basic MVP)
See www.hardandsoftware.net for contact information.
Author of Visual Basic Programmer's Guide to Serial Communications, 3rd
Edition ISBN 1-890422-27-4 (391 pages) published February 2002.
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| Thu, 15 Sep 2005 03:31:26 GMT |
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michk
#8 / 8
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ASCII Problem in VB.Net no character greater than 127 Hi{*filter*}, ASCII text is still never > 127, even in your class (unless the class
is misnamed <grin>).
ASCII is 0x00-0x7f (a.k.a. 0-127) only.
--
MichKa [MS]
This posting is provided "AS IS" with
no warranties, and confers no rights.
Quote: > Hi, > I'm not sure about the class that you obtained from MSDN, but you
can use
> NETComm.ocx (free) from my homepage -- this is equivalent to
MSComm32. Or,
> you can use the native VB .NET class that is in my book, and on the
> accompanying CD-ROM. It supports both ASCII text and binary data.
>{*filter*}
> --
> Richard Grier (Microsoft Visual Basic MVP)
> See www.hardandsoftware.net for contact information.
> Author of Visual Basic Programmer's Guide to Serial Communications,
3rd
> Edition ISBN 1-890422-27-4 (391 pages) published February 2002.
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| Thu, 15 Sep 2005 03:59:36 GMT |
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