我想把tdes.Key（byte[]）写入文件d:\\testfile.bin,然后再读出来赋值给byte[] t。怎么写呢？用c#

Question

我想把tdes.Key（byte[]）写入文件d:\\testfile.bin,然后再读出来赋值给byte[] text    怎么写呢？我这样写有问题吗
  //写入
              FileStream fsk = new FileStream("d:\\testfile.bin", FileMode.Create);
            BinaryWriter wk = new BinaryWriter(fsk);      
            wk.Write(tdes.Key);
            wk.Flush();
            wk.Close();
//读取
            FileStream fsk = new FileStream("d:\\testfile.bin", FileMode.Open);
            BinaryReader rk = new BinaryReader(fsk);
            byte[] text = rk.ReadBytes(12);
            rk.Close();
            fsk.Close();

Answer 1

稍微改动一下
 FileStream fsk = new FileStream("d:\\testfile.bin", FileMode.Create);
            BinaryWriter wk = new BinaryWriter(fsk);
            wk.Write(tdes.Key);
            wk.Flush();
            wk.Close();
            //读取 
            FileStream fsk = new FileStream("d:\\testfile.bin", FileMode.Open);
            BinaryReader rk = new BinaryReader(fsk);
            byte[] text = new byte[fsk.Length];
            rk.Read(text, 0, text.Length);
            rk.Close();
            fsk.Close();