Truncating a Stream...

[Guest]

Is it possible to truncate a MemroyStream to free up the space up to the
current position?

I wantes to be able to just keep dumping bytes into a stream and then read
the stream as needed. After the read, free up the portion of the stream I
read, esentially making the first unread byte the first byte in the stream.

Thanks.

Jerry

 

[Jon Skeet [C# MVP]]

Is it possible to truncate a MemroyStream to free up the space up to the
current position?

I wantes to be able to just keep dumping bytes into a stream and then read
the stream as needed. After the read, free up the portion of the stream I
read, esentially making the first unread byte the first byte in the stream.

MemoryStreams are basically backed by a byte array. You'd need to make
a copy of the part of the byte array you still need, and either create
a new MemoryStream or reset the current one. Your Position property is
likely to be wrong afterwards though...

It would possibly be easier to write such a stream class yourself than
to use MemoryStream. For one thing, you could make it use several
chunks of memory rather than a single byte array, which would make it
cheaper to throw the start away.

 

[Guest]

Thanks Jon. THat's basically what I ended up doing.

 

[Guest]

Sounds to me like you want / need some implementation of a CircularBuffer
class.
Peter