.NET 2.0 Serial Ports

[Alan Staton]

I am trying to send serial data at a very high rate (18 bytes every 5 msec). I am using a multimedia timer to get the 5msec and the built in Serial port object in the .NET 2.0 framework. I am using the begin and end write calls to do asyncronous writes in order to keep up. This seems to be working, but when I look at the memory usage for my program it is gradually going up and when I run for over 5 hrs I use all of the system memory and my program crashes. Does anyone know if there are known issues with the Serial Port object or of any way to do this without causing the memory to go up? Any help with this would be great, thanks.

[c guy3811]

my bet would be more on your code design with the Async calls than a flaw in the framework. Make sure you arent starting multiple async receives for the same operation and you are accepting all your callbacks. c#guy

[Alan Staton]

Thanks for the response, I will look into it.

[Alan Staton]

I am still not able to fix this problem. Here is the call to write the data to the serial port serialPorts[3].BaseStream.BeginWrite(attArray, 0, 18,new AsyncCallback (myWriteCallBack),serialPorts[3].BaseStream); myWriteCallBack is declared as public static void myWriteCallBack(IAsyncResult ar) { System.IO.Stream mySerialStream = (System.IO.Stream)ar.AsyncState; mySerialStream.EndWrite(ar); } Any help would be great! Thanks.