Question

I’ve been developing a windows app in .net C# for GSM Modems and i’ve come across a strange error:

System.ObjectDisposedException was unhandled
  Message="The secure parameter identifier was closed (pt: O parâmetro identificador seguro foi fechado)"
  Source="System"
  ObjectName=""
  StackTrace:
       at Microsoft.Win32.UnsafeNativeMethods.GetOverlappedResult(SafeFileHandle hFile, NativeOverlapped* lpOverlapped, Int32& lpNumberOfBytesTransferred, Boolean bWait)
       at System.IO.Ports.SerialStream.EventLoopRunner.WaitForCommEvent()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

This has only happened recently – i have no idea why… could it be i am disposing of a SerialPort and getting an answer of the modem later??
– shouldn’t this be avoided when i dispose of the SerialPort?

Answer 1

System.ObjectDisposedException always occurs when you are trying to use disposed object, so you’ve answered on you question by your own =)