C# Replace bytes in Byte[]

Question

What is the best way to replace some bytes in a byte array??

For instance i have bytesFromServer = listener.Receive(ref groupEP); and i can do Bit

Answer 1

You could program it.... try this for a start... this is however not robust not production like code yet...beaware of off-by-one errors I didn't fully test this...

    public int FindBytes(byte[] src, byte[] find)
    {
        int index = -1;
        int matchIndex = 0;
        // handle the complete source array
        for(int i=0; i=0)
        {
            dst = new byte[src.Length - search.Length + repl.Length];
            // before found array
            Buffer.BlockCopy(src,0,dst,0, index);
            // repl copy
            Buffer.BlockCopy(repl,0,dst,index,repl.Length);
            // rest of src array
            Buffer.BlockCopy(
                src, 
                index+search.Length , 
                dst, 
                index+repl.Length, 
                src.Length-(index+search.Length));
        }
        return dst;
    }

Implement as an extension method

public void Replace(this byte[] src, byte[] search, byte[] repl)
{
      ReplaceBytes(src, search, repl);
}

usage normal method:

ReplaceBytes(bytesfromServer, 
             new byte[] {0x75, 0x83 } , 
             new byte[]{ 0x68, 0x65, 0x6c});

Extension method usage:

bytesfromServer.Replace(
             new byte[] {0x75, 0x83 }, 
             new byte[]{ 0x68, 0x65, 0x6c});