Hello,
I need to send a couple of "NUL"s -> HEX value "00" on a networkstream..
This is the code we currently use to send string:
Dim sendBytes As [Byte]() = Encoding.ASCII. GetBytes(inputt ext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Since there is no char value for hex 00 (NUL) it's not possible to use a
string as input..
Thanks,
Sven
10  3938 
"Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb I need to send a couple of "NUL"s -> HEX value "00" on a
networkstream..
This is the code we currently use to send string:
Dim sendBytes As [Byte]() =
Encoding.ASCII. GetBytes(inputt ext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Since there is no char value for hex 00 (NUL) it's not possible to
use a string as input..
Why is there no "char value"? chr(0) returns such a char. Don't use ASCII
encoding because ASCII = 7 bits. Do you want to send the character codes of
the hexadecimal string representation of the chars, or do you want to send
the character codes themselves? What is "inputtext" ? What does it contain
for example?
One possible solution:
Dim sendBytes As Byte() 'no [ ] required here
sendBytes = Encoding.Defaul t.GetBytes(inpu ttext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Encoding.Defaul t returns the current ANSI codepage (8-Bit character codes).
The other solution depends on the answers to the questions above.
Maybe you can use a Streamwriter instead. You could pass the encoding once
to the constructor and don't have to convert each string on your own.
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
"Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb I need to send a couple of "NUL"s -> HEX value "00" on a
networkstream..
This is the code we currently use to send string:
Dim sendBytes As [Byte]() =
Encoding.ASCII. GetBytes(inputt ext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Since there is no char value for hex 00 (NUL) it's not possible to
use a string as input..
Why is there no "char value"? chr(0) returns such a char. Don't use ASCII
encoding because ASCII = 7 bits. Do you want to send the character codes of
the hexadecimal string representation of the chars, or do you want to send
the character codes themselves? What is "inputtext" ? What does it contain
for example?
One possible solution:
Dim sendBytes As Byte() 'no [ ] required here
sendBytes = Encoding.Defaul t.GetBytes(inpu ttext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Encoding.Defaul t returns the current ANSI codepage (8-Bit character codes).
The other solution depends on the answers to the questions above.
Maybe you can use a Streamwriter instead. You could pass the encoding once
to the constructor and don't have to convert each string on your own.
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
* "Sven Huijbrechts" <sv**@no-spam-hts.be> scripsit: Since there is no char value for hex 00 (NUL) it's not possible to use a
string as input..
?!?
You can use 'ControlChars.N ullChar' to get a null character.
--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>
* "Sven Huijbrechts" <sv**@no-spam-hts.be> scripsit: Since there is no char value for hex 00 (NUL) it's not possible to use a
string as input..
?!?
You can use 'ControlChars.N ullChar' to get a null character.
--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>
When you look at this page:
ms-help://MS.VSCC/MS.MSDNVS/vsintro7/html/_pluslang_ascii _character_code s_ch
art_1.htm
The first line (Dec: 0 / Hex: 00 / Char: / Code: NUL) is the code I have to
send..
I need to send a bigendian HEX value over the networkstream.
So I want to fill the array sendBytes with '00','00','00', '3E' for example.
My problem is that the string '0000003E' is converted to hex
'30','30','30', '30','30','30', '33','45'
And there is no string which translates to hex '00','00','00', '3E'
Sven
"Armin Zingler" <az*******@free net.de> wrote in message
news:ud******** *****@TK2MSFTNG P11.phx.gbl... "Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb I need to send a couple of "NUL"s -> HEX value "00" on a
networkstream..
This is the code we currently use to send string:
Dim sendBytes As [Byte]() =
Encoding.ASCII. GetBytes(inputt ext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Since there is no char value for hex 00 (NUL) it's not possible to
use a string as input..
Why is there no "char value"? chr(0) returns such a char. Don't use ASCII
encoding because ASCII = 7 bits. Do you want to send the character codes
of the hexadecimal string representation of the chars, or do you want to send
the character codes themselves? What is "inputtext" ? What does it contain
for example?
One possible solution:
Dim sendBytes As Byte() 'no [ ] required here
sendBytes = Encoding.Defaul t.GetBytes(inpu ttext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Encoding.Defaul t returns the current ANSI codepage (8-Bit character
codes).
The other solution depends on the answers to the questions above.
Maybe you can use a Streamwriter instead. You could pass the encoding once
to the constructor and don't have to convert each string on your own.
--
Armin
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html
When you look at this page:
ms-help://MS.VSCC/MS.MSDNVS/vsintro7/html/_pluslang_ascii _character_code s_ch
art_1.htm
The first line (Dec: 0 / Hex: 00 / Char: / Code: NUL) is the code I have to
send..
I need to send a bigendian HEX value over the networkstream.
So I want to fill the array sendBytes with '00','00','00', '3E' for example.
My problem is that the string '0000003E' is converted to hex
'30','30','30', '30','30','30', '33','45'
And there is no string which translates to hex '00','00','00', '3E'
Sven
"Armin Zingler" <az*******@free net.de> wrote in message
news:ud******** *****@TK2MSFTNG P11.phx.gbl... "Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb I need to send a couple of "NUL"s -> HEX value "00" on a
networkstream..
This is the code we currently use to send string:
Dim sendBytes As [Byte]() =
Encoding.ASCII. GetBytes(inputt ext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Since there is no char value for hex 00 (NUL) it's not possible to
use a string as input..
Why is there no "char value"? chr(0) returns such a char. Don't use ASCII
encoding because ASCII = 7 bits. Do you want to send the character codes
of the hexadecimal string representation of the chars, or do you want to send
the character codes themselves? What is "inputtext" ? What does it contain
for example?
One possible solution:
Dim sendBytes As Byte() 'no [ ] required here
sendBytes = Encoding.Defaul t.GetBytes(inpu ttext.ToString)
networkStream.W rite(sendBytes, 0, sendBytes.Lengt h)
Encoding.Defaul t returns the current ANSI codepage (8-Bit character
codes).
The other solution depends on the answers to the questions above.
Maybe you can use a Streamwriter instead. You could pass the encoding once
to the constructor and don't have to convert each string on your own.
--
Armin
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html
"Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb When you look at this page:
ms-help://MS.VSCC/MS.MSDNVS/vsintro7/html/_pluslang_ascii _character_code s_ch art_1.htm
The first line (Dec: 0 / Hex: 00 / Char: / Code: NUL) is the code I
have to send..
I need to send a bigendian HEX value over the networkstream.
So I want to fill the array sendBytes with '00','00','00', '3E' for
example.
My problem is that the string '0000003E' is converted to hex
'30','30','30', '30','30','30', '33','45'
And there is no string which translates to hex '00','00','00', '3E'
You say the string to be sent is "0000003E"? If yes:
Dim s As String = "0000003E"
Dim b As Byte()
Dim i As Integer
ReDim b(s.Length \ 2 - 1)
For i = 0 To s.Length Step 2
b(i \ 2) = Convert.ToByte( s.Substring(i, 2), 16)
Next
If it is always 8 chars in the source string (representing an Integer):
b = BitConverter.Ge tBytes(Convert. ToInt32(s, 16)).
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
"Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb When you look at this page:
ms-help://MS.VSCC/MS.MSDNVS/vsintro7/html/_pluslang_ascii _character_code s_ch art_1.htm
The first line (Dec: 0 / Hex: 00 / Char: / Code: NUL) is the code I
have to send..
I need to send a bigendian HEX value over the networkstream.
So I want to fill the array sendBytes with '00','00','00', '3E' for
example.
My problem is that the string '0000003E' is converted to hex
'30','30','30', '30','30','30', '33','45'
And there is no string which translates to hex '00','00','00', '3E'
You say the string to be sent is "0000003E"? If yes:
Dim s As String = "0000003E"
Dim b As Byte()
Dim i As Integer
ReDim b(s.Length \ 2 - 1)
For i = 0 To s.Length Step 2
b(i \ 2) = Convert.ToByte( s.Substring(i, 2), 16)
Next
If it is always 8 chars in the source string (representing an Integer):
b = BitConverter.Ge tBytes(Convert. ToInt32(s, 16)).
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
"Sven Huijbrechts" <sv**@no-spam-hts.be> schrieb When you look at this page:
ms-help://MS.VSCC/MS.MSDNVS/vsintro7/html/_pluslang_ascii _character_code s_ch art_1.htm
The first line (Dec: 0 / Hex: 00 / Char: / Code: NUL) is the code I
have to send..
I need to send a bigendian HEX value over the networkstream.
So I want to fill the array sendBytes with '00','00','00', '3E' for
example.
My problem is that the string '0000003E' is converted to hex
'30','30','30', '30','30','30', '33','45'
And there is no string which translates to hex '00','00','00', '3E'
You say the string to be sent is "0000003E"? If yes:
Dim s As String = "0000003E"
Dim b As Byte()
Dim i As Integer
ReDim b(s.Length \ 2 - 1)
For i = 0 To s.Length Step 2
b(i \ 2) = Convert.ToByte( s.Substring(i, 2), 16)
Next
If it is always 8 chars in the source string (representing an Integer):
b = BitConverter.Ge tBytes(Convert. ToInt32(s, 16)).
......
I forgot: In the first example the byte order must be reversed.
To reverse an existing array, use Array.Reverse.
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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