c# - 用 10 10 替换字节 10

Question

您好，我想用 10 x 10 10 替换 byte[]。这是我的代码。如果我的数据为“10 20 10 20 40 50 50 50 50 10 03”，我想将其替换为“10 20 10 10 20 40 50 50 50 50 10 10 03”注意:第一个字节未受影响请按照我的评论，我的想法是将字节数组推到 nxt 位置并再添加 10。

 foreach (var b in command.ToBytes()) 
                {

                   // var c = b;
                    transmitBuffer[count++] = b;  data is formed here
                    addedbuffer[addall++] = b;     duplication is made
                }
                if (addedbuffer[0] == 16 && addedbuffer[1] == 32 || addedbuffer[50] == 16 && addedbuffer[51] == 03)           /
                    {
/condition on which to enter here
                        addedbuffer[0] = 0;  //making 1st and 2nd value as null
                        addedbuffer[1] = 0;
                        for (int i = 0; i < addedbuffer.Length; i++) //till length i will chk 
                        {
                            if (addedbuffer[i] == 10) //replace 10  by 10 10 
                                addedbuffer[i] = 1010; // error,
                        }




        }

Answer 1

你不能插入到数组中(你可以用List<T>来完成)，所以看起来你必须创建一个新的 em>数组； Linq 解决方案:

  Byte[] source = new Byte[] {
    20, 10, 20, 40, 50, 50, 50, 50, 10, 03
  };

  var result = source
    .SelectMany((item, index) => 
       item == 10 && index != 0 ? new Byte[] { item, item } : new Byte[] { item })
    .ToArray();

但是，使用 List<Byte> (为了只插入 10)而不是 Byte[]是更好的出路:

  List<Byte> list = List<Byte>() {
    20, 10, 20, 40, 50, 50, 50, 50, 10, 03
  };

  // In order not to read inserted 10's we loop backward 
  // i >= 1: 1st byte should be preserved as is even if its == 10
  for (int i = list.Count - 1; i >= 1; --i)
    if (list[i] == 10)
      list.Insert(i + 1, 10);