哪一个具有更好的性能，当复制字节的块？

which one has better performance when copy a block of byte?

推荐答案

Buffer.BlockCopy 是pretty的优化 - 这基本上是一个包装了原始的MEM-复制;所以它应该是pretty的快（并避免与指针搞乱和不安全 code）。它应该是默认的。你当然可以衡量每路......

Buffer.BlockCopy is pretty optimised - it is basically a wrapper over a raw mem-copy; so it should be pretty fast (and avoids messing with pointers and unsafe code). It should be the default. You could of course measure it each way...