C# 二进制字节流查找函数IndexOf
/// <summary>/// 报告指定的 System.Byte[] 在此实例中的第一个匹配项的索引。/// </summary>/// <param name="srcBytes">被运行查找的 System.Byte[]。</param>/// <param name="searchBytes">要查找的 System.Byte[]。</param>/// <returns>假设找到该字节数组。则为 searchBytes 的索引位置。假设未找到该字节数组。则为 -1。假设 searchBytes 为 null 或者长度为0。则返回值为 -1。</returns>internal int IndexOf(byte[] srcBytes, byte[] searchBytes){if (srcBytes == null) { return -1; }if (searchBytes == null) { return -1; }if (srcBytes.Length == 0) { return -1; }if (searchBytes.Length == 0) { return -1; }if (srcBytes.Length < searchBytes.Length) { return -1; }for (int i = 0; i < srcBytes.Length - searchBytes.Length; i++){if (srcBytes[i] == searchBytes[0]){if (searchBytes.Length == 1) { return i; }bool flag = true;for (int j = 1; j < searchBytes.Length; j++){if (srcBytes[i + j] != searchBytes[j]){flag = false;break;}}if (flag) { return i; }}}return -1;}
使用演示样例：
receiveData = new byte[1024];int receiveLen = socket.ReceiveFrom(receiveData, ref ep);receiveData = this.SubByte(receiveData, 0, receiveLen);if (this.IndexOf(receiveData, System.Text.Encoding.Unicode.GetBytes("Exec_Exit")) != -1){this.runing = false;break;}
