Combine one Byte[] to Single Array

Question

i do have an byte array included a range of numbers...

t Block and not the rest!

How can i have all block 4-8 in Temp[] ??

yes i have 4Byte and in Temp also i need to have 4 Bytes but the method i used it only return me the 1th byte and skip the rest how can i return all 4 bytes in my Temp? — Alexandera MacQueen
– Alexandera MacQueen, Commented Dec 18, 2012 at 9:22
CMD suppose to be [493131] but now its only 49 the first Byte — Alexandera MacQueen
– Alexandera MacQueen, Commented Dec 18, 2012 at 9:23
BlockCopy is Correct as i test already the only thing is this Block copy have to read 3 Bytes and store them in one Array Called Temp[] — Alexandera MacQueen
– Alexandera MacQueen, Commented Dec 18, 2012 at 9:39

Sani Huttunen · Accepted Answer · 2012-12-18 09:40:54Z

2

Elements 4-8 (or in reality index 3-7) is 5 bytes. Not 4.
You have the source offset and count mixed up:

Buffer.BlockCopy(bResponse, 3, temp, 0, 5);

Now temp will contain [23232].

If you want the last 4 bytes then use this:

Buffer.BlockCopy(bResponse, 4, temp, 0, 4);

Now temp will contain [3232].
To convert this to an int:

if (BitConverter.IsLittleEndian)
  Array.Reverse(temp);

int i = BitConverter.ToInt32(temp, 0);

Edit: (After your comment that [43323232] actually is {43, 32, 32, 32})

var firstByte = temp[0];   // This is 43
var secondByte = temp[1];  // This is 32
var thirdByte = temp[2];   // 32
var fourthByte = temp[3];  // 32

If you want to convert this to an int then the BitConverter example above still works.

edited Dec 18, 2012 at 9:40

answered Dec 18, 2012 at 9:22

Sani Huttunen

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4 Comments

Alexandera MacQueen Over a year ago

This is not the Answer! This one its only to take 3 block from buffer how you want to assign this 3 in one Temp[]?

Alexandera MacQueen Over a year ago

Each of this have to read individually and sort in Temp back to back with your method is nothing but only reading 4bytes. I have no problem for reading the problem is assigning this 4 in another Array i call Temp[]

Sani Huttunen Over a year ago

@Artinos: You are wrong about the number of bytes read. If you read the MSDN page of Buffer.BlockCopy you'll see that it is you who have mixed up the source offset and count parameters.

Alexandera MacQueen Over a year ago

You are Right about the Number My bad in Typing ...However i still cannot Put put the 3 byte block into one block called Temp[]

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