从字符串数组中复制字节，从匹配的字符串的位置开始。 [英] Copy bytes from array of bytes , from the position of string matched.

问题描述

大家都在这里我正在读缓冲区，我会通过增加最后3位来搜索字符串几次，我想从缓冲区中每个字符串搜索复制字节，从搜索字符串的起始位置到大约554字节，并将554个字节复制到另一个缓冲区，将其视为数据包。



，



我尝试过：

Hi all here I am reading a buffer, and I'll search string several times by increasing last 3 digits, I want to copy bytes per each string search from buffer , from the starting position of searched string to till about 554 bytes, and copy the 554 bytes to another buffer considering it as a packet.

,

What I have tried:

FileStream fssource1 = new FileStream(file1, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);

           byte[] source1 = new byte[fssource1.Length];
           numBytesToRead = (int)fssource1.Length;
           numBytesRead = 0;
           while (numBytesToRead > 0)
           {

               int n = fssource1.Read(source1, numBytesRead, numBytesToRead);

               // Break when the end of the file is reached.
               if (n == 0)
                   break;

               numBytesRead += n;
               numBytesToRead -= n;
           }
           numBytesToRead = source1.Length;
           fun.extract(ref source1);

和匹配的字符串如下，我不知道进一步的行动，

and matching string as follows and I don't know further action,

>public void extract(ref byte[] buffer)
       {



           for (int i = 108; i <= nNoofPackets; i++)
           {
               string search = "MINDFLOWfP"+i.ToString().PadLeft(3,Convert.ToChar("0"));

               var index = Array.IndexOf(buffer, search);
               if (index!=-1)

{

推荐答案

如果您有索引，那么只需复制该部分你想要的数组： Array.Copy Method（Array，Int32，Array， Int32，Int32）（系统） [ ^ ]就是这样做的。

If you've got the index, then just copy the section of the array you want: Array.Copy Method (Array, Int32, Array, Int32, Int32) (System)[^] is there to do exactly that.

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