Convert String to Byte Array

[IphoneDev]

Hi,

I wondered if there was some command in autoit like the Convert.ToByte for C#.

Need to output something to a serial device through the COM port already got that working but need to send it as a Byte value.

Thanks!

Edited March 17, 2010 by IphoneDev

[Fulano]

Something like StringToBinary?

Looked at the C# docs, and Convert.ToByte did not do what I thought it did.

Edited March 17, 2010 by Fulano

[IphoneDev]

I don't think thats it :s

This is how I do it in C#

serialPort1.Write(new byte[] { Convert.ToByte(string) }, 0, 1);

Edited March 17, 2010 by IphoneDev

[trancexx]

What's something?

[IphoneDev]

AutoIt outputs this

0x39332E36373239383231313433363732

This is my AutoIt code:

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_UseX64=n
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****
#include <CommMG.au3> ;or if you save the commMg.dll in the @scripdir use #include @SciptDir & '\commmg.dll'
#include <String.au3>
$error = ""

$rand = Random(0, 100)
$rand = StringToBinary($rand)
ConsoleWrite($rand & @CR)
_CommSetPort(3, $error, 9600, 8, 0, 1, 0)
_CommSendString($rand, 8)
_CommCloseport()

Edited March 17, 2010 by IphoneDev

[Fulano]

Because AutoIt is a weakly typed language conversions are usually handled in the background. To get this kind of conversion you may need to try calling Convert.ToByte directly - something like they were doing here with the VB Dictionary object.

I'm short on time right now or I'd test it myself. If the question is still open when I get back to my windows box on Monday then I'll play around with it and see what I can find out.

[jvanegmond]

_CommSendString accepts string as input, you don't have to manually convert the string into a byte array.

Your code becomes:

#include <CommMG.au3> ;or if you save the commMg.dll in the @scripdir use #include @SciptDir & '\commmg.dll'

#include <String.au3>

$error = ""

$rand = Random(0, 100)

ConsoleWrite($rand & @CR)

_CommSetPort(3, $error, 9600, 8, 0, 1, 0)

_CommSendString($rand, 8)

_CommCloseport()

See if this works.

[trancexx]

So the title should have been: "Convert String to Byte Array".

Thanks Manadar.

[IphoneDev]

Already tried that, it did not work.

Just to assure myself I tried again, still no luck.

[trancexx]

Is there any error/exception/whatever handling in C#?

[IphoneDev]

Yes, atleast when its only running in the IDE.

Still trying to find out how to convert a string to byte array, no luck so far.

Anyone else?

[trancexx]

Yes, atleast when its only running in the IDE.

There is in AutoIt too. Use it. Check errors. I'm sure martin is setting @errors properly.

Still trying to find out how to convert a string to byte array, no luck so far.

Anyone else?

You really make no sense now.

[Fulano]

Correct me if I'm wrong, but looking at the documentation here it looks like you are looking for a simple String->Ascii Array conversion.

If that's the case, there's a function for that.

[tukangusil7]

By coincidence, I recently dealt with this issue.

To copy a string to an array bytes, just use a StringToBinary() in the third parameter of DllStructSetData().

#include <StringConstants.au3>

Opt("MustDeclareVars", 1)

Local Const $ciSizeOfWChar = 2

; Copy $sText to an array of bytes, which is the first element of $taiData struct
Local $taiData = DllStructCreate("BYTE[256]")
Local $sText = "Ani text"
DllStructSetData($taiData, 1, StringToBinary($sText, $SB_UTF16LE))

; Replace the third character in the array of bytes, which is "i", to "y",
; thus "Ani text" becomes "Any text".
Local $piData = DllStructGetPtr($taiData, 1)  ; Pointer to the BYTE[0]
Local $tchChar = DllStructCreate("WCHAR", $piData + (3 - 1) * $ciSizeOfWChar)
DllStructSetData($tchChar, 1, "y")

; Display the result
Local $bvResult = DllStructGetData($taiData, 1)  ; We get a binary variant here
Local $sResult = BinaryToString($bvResult, $SB_UTF16LE)  ; Convert the binary variant to string
MsgBox(0, "", $sResult)

Good luck.

Edited April 26, 2018 by tukangusil7