C# .NET: Will a BinaryWriter flush when the FileStream buffer is filled? -



C# .NET: Will a BinaryWriter flush when the FileStream buffer is filled? -

i'm coming across trivial, appears info flushed disk (out of filestream's buffer) when info i'm buffering hits size of filestream's buffer.

//use filestream buffer buffer info written, segments written desired. filestream writestream = new filestream(filename, filemode.append, fileaccess.write, fileshare.none, commandoperationbuffersize); binarywriter binwriter = new binarywriter(writestream); byte[] fullsize = new byte[commandoperationtotalsize]; //the binarywriter flush when filestream buffer nail binwriter.write(fullsize); //data flushes disk here! //if wait, wait 5 seconds if (commandoperation == "writewait" || commandoperation == "appendwait") { thread.sleep(5000); writestream.flush(); thread.sleep(5000); } writestream.close(); writestream.dispose(); binwriter.close();

can confirm case? filestream's buffer actual .flush() when filestream's buffer filled?

i inquire because appears if set commandoperationtotalsize 1mb, , set commandoperationbuffersize 64kb, info flushed disk when buffer filled.

sounds answered own question, seems odd filestream buffer wouldn't overflow? maybe api developers trying nice?

thanks,

matt

you can readily assume overflowing buffer not possible. class rather hard utilize if case, given filestream has no properties @ tell how much beingness buffered.

the buffer there cut down number of calls native windows writefile() call. of import when write little amounts of data, 1 byte @ time. if don't explicitly specify buffer size utilize buffer of 4096 bytes. fine, very rare need else. writes farther buffered file scheme cache. should consider non-standard size when utilize fileoptions.writethrough

c# .net stream filestream flush

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