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I am trying to send commands to a machine

The machine accepts the packet with a byte array...

I need to build a form that will allow the user to enter the command in char format and then convert it to a byte array for example

I can send the machine

byte[] packet = 
((byte) (0x02)),
((byte) (0x05)),
((byte) (0xFF)),


I need the user to be able to input for example "0x02 0x07 0x03 0xFF"
and the string from the textbox.text be converted into a byte array with the for 4 byte values that represent the ansi format

I tried without success:

byte[] packet =
((byte) (string1)),
((byte) (string2)),
((byte) (string3)),

OP's Answer moved to here:
tried to google it already and frustrating that I can't find anything.
if I use the code from the above link, it interprets each digit and letter with a value
for the example below the byte array had 14 items. I need to get the 3 values. I would probably deliminate the string by spaces and then get the values for each one
In this case
0x02= 2
0xFF = 255
0x03 = 3
or a way that I can get the string and convert the literal string "0x02" and add it to to a byte array with its byte value

System.Text.Encoding enc = System.Text.Encoding.ASCII;
byte[] myByteArray = enc.GetBytes("0x02 0xFF 0x03");
Updated 16-May-11 12:16pm
yesotaso 16-May-11 16:00pm    
I see plus plus everywhere :)
Keith Barrow 16-May-11 16:27pm    
That's nothing, I see dead pointers. :)
yesotaso 16-May-11 16:36pm    
I simply cannot find words to express how much I rofl having read that Mr. Barrow. Seriously, nice one :)
fjdiewornncalwe 16-May-11 17:15pm    
I spy with my little eye something that is...
Seriously, though. Look at John's answer.
yesotaso 16-May-11 17:25pm    
I respectfully agree with Mr. Simmons. On the other hand, to get things working sometimes it takes little more than just googles.

1- String.Split Method (Char[])[^]
2- Byte.Parse Method (String, NumberStyles)[^] (System.Globalization.NumberStyles.HexNumber for instance for Hex parsing)
3- For further practice System.BitConverter[^] which seems redundant for question but maybe usefull if you are going to use byte stuff.

This should work for you: (2nd argument of ToByte is base of converted number)
string input = "0x02 0x07 0x03 0xFF";
            return input.Split(' ').Select(s => Convert.ToByte(s, 16)).ToArray();
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Albin Abel 16-May-11 19:25pm    
Good one. My 5
yesotaso 16-May-11 20:30pm    
Kim Togo 17-May-11 6:41am    
Nice use of LINQ :-), my 5.
yesotaso 17-May-11 14:24pm    
roman_s 17-May-11 10:31am    
Works Great returns back the byte values in the bit array..

instead of using the method to return the array list I just assigned a byte array list to the string select/linq method

string input = "0x02 0x07 0x03 0xFF";
byte[] bArray = input.Split(' ').Select(s => Convert.ToByte(s, 16)).ToArray();

Thanks to everyone for their help, also the links above were great to learn more about our little value type byte.[^]

Google is free, and ready for you to use.
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