ByteHelper 字节数组流式拼接

public class ByteHelper
    {
        /// <summary>
        /// 组合成新的数组并返回
        /// </summary>
        /// <param name="source"></param>
        /// <param name="target"></param>
        /// <returns></returns>
        public static byte[] GetArray(ref byte[] source, byte[] target)
        {
            if (target == null)
            {
                return null;
            }
            if (source == null)
            {
                source = target;
            }
            else
            {
                byte[] data = new byte[source.Length + target.Length];
                Array.Copy(source, data, source.Length);
                Array.Copy(target, 0, data, source.Length, target.Length);
                source = data;
            }
            return source;
        }
        /// <summary>
        /// 组合成新的数组并返回
        /// </summary>
        /// <param name="source"></param>
        /// <param name="target"></param>
        /// <returns></returns>
        public static byte[] GetArray(ref byte[] source, byte target)
        {
            return GetArray(ref source, new byte[] { target });
        }
        /// <summary>
        /// 组合成新的数组并返回
        /// </summary>
        /// <param name="source"></param>
        /// <param name="target"></param>
        /// <returns></returns>
        public static byte[] GetArray(byte[] source, byte[] target)
        {
            return GetArray(ref source, target);
        }
    }