c# 合並數組

轉自：https://www.cnblogs.com/gdjlc/archive/2012/11/06/2757206.html

 

byte[] defArr = File.ReadAllBytes(filePath);

byte[] md5Arr = GetMd5Hash(filePath);
            
int len = defArr.Length + md5Arr.Length;
byte[] lenArr = BitConverter.GetBytes(len);
if (BitConverter.IsLittleEndian)
   Array.Reverse(lenArr);

//resArr為合並后數組
byte[] resArr = new byte[lenArr.Length + defArr.Length + md5Arr.Length];
lenArr.CopyTo(resArr, 0);
md5Arr.CopyTo(resArr, lenArr.Length);
defArr.CopyTo(resArr, lenArr.Length + md5Arr.Length);