Add bytes to byte array C#

Question

How could I add the following bytes to a c# byte array?

00 00 00 00 00 00 00 00 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 00 00 00 00 00 00 00 00

Does this make sense?

public void updateBytes(string exeName, int value)
{
    long baseaddress = GetBaseAddress(exeName, exeName + ".exe");
    long pointer = GetPointerAddress(baseaddress + 0x04105320, new int[] { value });

    byte[] intBytes = "00 00 00 00 00 00 00 00 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 00 00 00 00 00 00 00 00";

    WriteBytes(pointer, intBytes);
}

I would appreciate any kind of help

It is better to use a list object which has an add method than to use an array. — jdweng
– jdweng, Commented Dec 15, 2016 at 14:08

mrogal.ski · Accepted Answer · 2016-12-15 14:15:48Z

1

Okay, so first of all you have a string and you want to assign this to byte[] which is a big nono. If you cannot change this to byte[] by hand ( because of some weird protocol or something ) you can do this like that :

// assign bytes to string
string meBytes = "00 00 00 00 00 00 00 00 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 00 00 00 00 00 00 00 00";
// split them by spaces
string[] hexBytes = meBytes.Split(new char[] { (char)0x20 });
// extract bytes
byte[] bytes = meBytes.Select(x => Convert.ToByte(x, 16)).ToArray();
// now you can write them into stream
WriteBytes(pointer, bytes);

You can even do this in two lines :

string meBytes = "00 00 00 00 00 00 00 00 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 04 05 01 01 01 01 01 01 00 00 00 00 00 00 00 00";
WriteBytes(pointer, meBytes.Split(new char[] { (char)0x20 }).Select(x => Convert.ToByte(x, 16)).ToArray());

edited Dec 15, 2016 at 14:15

answered Dec 15, 2016 at 14:13

mrogal.ski

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2 Comments

Dmitrii Bychenko Over a year ago

meBytes.Split(0x20) doesn't compile: 0x20 is of type int, when char is expected; 0x20 is magic number antipattern (what does it stand for?) when ' ' (space) is evident

mrogal.ski Over a year ago

@DmitryBychenko Thank you for pointing that. Fixed it. And 0x20 ( as everyone knows ) is just a space character and it is more convenient ( for me and people i know ) to write bytes/chars in hex format.

Stephan Bauer · Accepted Answer · 2016-12-15 14:08:07Z

1

It seems to me that you don't really want to add items to an array but create/initialize an array with given values.

You can use the following syntax to initialize an array:

byte[] intBytes = {0,0,0,4,5,1,1 /* ... */ };

answered Dec 15, 2016 at 14:08

Stephan Bauer

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Comments

Dmitrii Bychenko · Accepted Answer · 2016-12-15 14:11:53Z

1

if you want parse string into array of byte (byte[]) you can use Linq:

string source = "00 00 00 00 00 00 00 00 04 05...";

byte[] intBytes = source
  .Split(' ')
  .Select(item => Convert.ToByte(item, 16))
  .ToArray();

answered Dec 15, 2016 at 14:11

Dmitrii Bychenko

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