system.byte[] error c# when converting from string to byte

Question

i want to convert string to Byte[] in C# and with the help of previous topics i use this code : string s = "0a"; System.Text.ASCIIEncoding encode = new System.Text.ASCIIEncoding(); byte[] b = encode.GetBytes(s); Console.WriteLine(b);

but when i run this code it only prints : " System.byte[]"

You don't have to create the encoding object. One is provided for you: `System.Text.Encoding.ASCII` — Lucas Trzesniewski, Sep 21 '14 at 11:04
yes , but either with the thing mentioned the output is just same as b4. — user3639111, Sep 21 '14 at 11:06
Yes, I know, I was just pointing out how you could shorten your code. That wasn't an attempt at an answer. — Lucas Trzesniewski, Sep 21 '14 at 11:06
Is 0a a hex string? It is not clear the format you wish to output the bytes as: hex digits, base10 digits, some other encoding? — dana, Sep 21 '14 at 11:25
@dana yes , i want to transfer a hes string value to a byte array . for example a "0x18" into an array of bytes . — user3639111, Sep 21 '14 at 11:38
what do you want to print ? the elements of the byte array ? the original string ? your question is ambiguous — Jalal Mostafa, Sep 21 '14 at 11:45
This answer might be what you are looking for: http://stackoverflow.com/questions/311165/how-do-you-convert-byte-array-to-hexadecimal-string-and-vice-versa — dana, Sep 21 '14 at 11:47

score 0 · Answer 1 · answered Sep 21 '14 at 11:15

If you want do this Console.WriteLine(b) it will prints the type of b which is System.Byte[]. In order to print the string stored in byte[] b, just make use of System.Text.ASCIIEncoding.GetString(byte[] b);

so in your case, encode.GetString(b); will get your string.

score 0 · Answer 2 · answered Sep 21 '14 at 11:44

You can use BitConverter class Check: http://msdn.microsoft.com/en-us/library/3a733s97(v=vs.100).aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-2

 System.Text.ASCIIEncoding encode = new System.Text.ASCIIEncoding();
 byte[] b = encode.GetBytes(s);
 Console.WriteLine(BitConverter.ToString(b));

score 0 · Accepted Answer · answered Sep 21 '14 at 11:53

I think I may have finally deciphered your question. Are you trying to get the hex digits of your string into an array?

I'm assuming that you want to take 2-digit hex values from a string and convert each lot into bytes. If not, I'm as lost as everyone else. Please note that I have not included any error checking!

byte[] data = new byte[s.Length/2];
for(int i = 0; i < s.Length/2; ++i)
{
    byte val = byte.Parse(s.Substring(i*2,2), System.Globalization.NumberStyles.HexNumber);
    data[i] = val;
}

foreach(byte bv in data)
{
    Console.WriteLine(bv.ToString("X"));    
}

Yes ! exactly get what i am saying and this was my answer , thanks ! @john — user3639111, Sep 21 '14 at 12:00

score 0 · Answer 4 · answered Sep 21 '14 at 11:56

0

Your code already does the trick of converting string to byte, if your query is to print individual byte value, why not use a loop to print the value in byte array:

foreach (byte bb in b)
{
   Console.Write(Convert.ToInt32(bb));
}

answered Sep 21 '14 at 11:56

saif

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score -1 · Answer 5 · answered Sep 21 '14 at 10:59

-1

That's because it's returning the type of the object that you are typing. If you want to print the content of the array, try this:

Arrays.toString(byteArray)

answered Sep 21 '14 at 10:59

developer82

12,550
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there is no 'Arrays' in my editor/compiler when i type arrays. – user3639111 Sep 21 '14 at 11:03
`Array.ToString()` will also return the type, are you mixing between Microsoft Dynamics AX and .Net Frame work O.o ? – Jalal Mostafa Sep 21 '14 at 11:31

system.byte[] error c# when converting from string to byte

5 Answers5