How to transform a string in a char array?

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Hi,

I have a string like this

\x00\x00\x00\x00\x00\x00\x00\x00

and I want to change it in a char array, like this : 00 00 00 00 00 00 00 00;

How can I made it like that?

Thanks.

What I have tried:

I have already tried the split function but it didn't worked.
Maybe I didn't use it right.

Posted 11-Sep-17 21:05pm

Todiruta Costel Nicusor

Updated 11-Sep-17 21:43pm

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CPallini · Accepted Answer · 2017-09-11T21:34:00

Solution 1

Do you mean

C#

string s = @"\x00\x00\x00\x00\x00\x00\x00\x00";
string[] a = s.Split(new string []{@"\x"},StringSplitOptions.RemoveEmptyEntries);
char[] ca = new char[a.Length];
for (int k = 0; k < a.Length; ++k)
  ca[k] = System.Convert.ToChar(System.Convert.ToUInt32(a[k], 16));

?

Posted 11-Sep-17 21:34pm

CPallini

Jochen Arndt · Accepted Answer · 2017-09-11T21:39:00

That is a C source file string specifying hex codes for the characters.

If you really have such a string (that is character codes 0x5C 0x78 0x30 0x30) you can remove the "\x" from the string and convert the resulting string to a byte array. That can be than converted to a char array (but it might not be necessary depending on what you want to do with it).

To remove the "\x" you can use

C#

String.Replace(@"\x", "");

or

C#

String.Replace("\\x", "");

There are many examples to convert the resulting string to a byte array. Just search the net for something like "c# hex string to byte array":
c# - How can I convert a hex string to a byte array? - Stack Overflow[^]

OriginalGriff · Accepted Answer · 2017-09-11T21:43:00

That's going to depend on what your string is exactly - and there are two possibilities
Here's one:

C#

string inp = @"\x00\x00\x00\x00\x00\x00\x00\x00";

And here's the other:

C#

string inp = "\x00\x00\x00\x00\x00\x00\x00\x00";

How you need to handle them is different.
The first is fairly trivial:

C#

string inp = @"\x00\x00\x00\x00\x00\x00\x00\x00";
string[] values = inp.Split(new string[] { "\\x" }, StringSplitOptions.RemoveEmptyEntries);
char[] data = new char[values.Length];
int i = 0;
foreach (string s in values)
    {
    data[i++] = (char)Convert.ToByte(s, 16);
    }

The second is even more trivial: a string is a char array, effectively in that you can access individual characters via an index, but:

C#

string inp = "\x00\x00\x00\x00\x00\x00\x00\x00";
char[] data = inp.ToArray();

How to transform a string in a char array?

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