comma separated array of hex string with control characters to byte array

Question

I guess its very simple but it wasted my time a lot but still no luck!

the following is working very nicely-

sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
byte[] bytes=new byte[]{0x7F, 0x00, 0x00, 0x21, 0x09, 0x7F, 0x30, 0x00, 0x15, 0x02, 0x02, 0x00, 0xEE, 0x28, 0xCB, 0x87 };
sck.Connect("192.168.1.100", 8008);
sck.Send(bytes);
sck.Close();

and, if I keep those array of hex strings in a text box like-

textbox1.Text="0x7F, 0x00, 0x00, 0x21, 0x09, 0x7F, 0x30, 0x00, 0x15, 0x02, 0x02, 0x00, 0xEE, 0x28, 0xCB, 0x87";

But, I need to use the textbox1.Text string for the same task; like-

sck.Send(textbox1.Text);

I tried a lot but could not come up with any solution. Please guide me...

In fact, I'll keep the hex string in the database as string and will be retrieved later in my program.

Which language? Tag the appropriate language in the question! — Am_I_Helpful, Nov 19 '16 at 17:55

score 0 · Accepted Answer · edited May 23 '17 at 10:30

0

Firstly, the difference between a string and a byte array is :

"0x03" as a string is of 4 bytes
 0x03 as an entry in a byte array is of 1 byte

So what you need to do is Delimit the string at , and separate different hexadecimal strings, store them in a string array or any other data structure.

Then you have to convert these strings to a single byte using some function or you can create your own method, one of them can be found here.

Store these bytes in a byte array and you're good to go.

edited May 23 '17 at 10:30

Community

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answered Nov 19 '16 at 13:13

NoSuchUserException

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Hi Mohit, thank you for such nice idea. I also thought to do in that way. Though I was looking for if there is anything very simple method or builtin function. – Tohfatul Islam Milton Nov 20 '16 at 06:45
yeah there are some built-in functions, but they have some limitations, thats why I suggested you to just develop your own function or follow the link mentioned above. – NoSuchUserException Nov 20 '16 at 07:03
I did it! Thanks Mohit. – Tohfatul Islam Milton Nov 22 '16 at 07:55
Well if you did get help from my answer, you should have accepted it. – NoSuchUserException Nov 23 '16 at 13:19
Hi Mohit, May be I've accepted. Previously I didn't notice it. Because, I am not regular to Stack. Please check and let me know. – Tohfatul Islam Milton Dec 06 '16 at 13:57
Yeah it's cool, I'm sure your problem has been solved, isnt it? – NoSuchUserException Dec 07 '16 at 17:37
Yes. It was solved. Bellow is the answer (Ans no 2). I request you to accept my answer also. thanks. – Tohfatul Islam Milton Dec 13 '16 at 17:21

score 0 · Answer 2 · answered Nov 22 '16 at 07:56

I did it the following way:

txtHexString.Text="0x11, 0x01, 0x49, 0x4D, 0x41, 0x47, 0x45, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x53, 0x75, 0x6D, 0x6D, 0x61, 0x72, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00";

string[] namesArray =  txtHexString.Text.Split(',');
byte[] abc= new byte [namesArray.Length];

for (int i = 0; i <= namesArray.Length - 1; i = i + 1)
        {
            abc[i] = Convert.ToByte(namesArray[i].Replace(" ", ""), 16);
        }

here, abc is the desired byte array.

comma separated array of hex string with control characters to byte array

2 Answers2