Safe Handle Has Been Closed Serial Port

Posted on by admin
  1. Safe Handle Has Been Closed Serial Port C#
ClosedObjectdisposedexception

Mar 22, 2017. Ports.SerialPort.Dispose(Boolean disposing) at System.ComponentModel.Component.Dispose() at SerialPortFailure.Program.Main(String[] args) in C: Projects Common SerialPortFailure SerialPortFailure SerialPortFailure Program.cs:line 20 What happened? Press q to exit. Safe handle has been closed.

Safe Handle Has Been Closed Serial Port C#

HOME » Programming Languages
So this is a rather small question with a big explanation. As is noted
by the title I am getting an unhandled exception telling me my Safe
handle has been closed. What I'll probably have to do is edit this
post a few times with more and more code to help me diagnose what the
problem is.I'm using POS for .NET to make a Service Object for my RFID
and MSR device. Although my devices are the same, I have 2 different
Virtual COM Port chips that communicate to those devices. One by
Silicon labs, the

I have the following code in a test:


private void
LoadIncomeStatementViewModel()
{
using (var evt
= new AutoResetEvent(false))
{
EventHandler handler = (sender, e) => evt.Set();
_incomeStatementViewModel.Loaded -= handler;
_incomeStatementViewModel.Loaded += handler;
_incomeStatementViewModel.LoadDataCommand.Execute(null);
evt.WaitOne();
}
}

Now
if I run the following test


[Test]
public void
Test()
{
LoadIncomeStatementViewModel();
Web Design

Code which I have inherited keeps crashing out rather powerfully
with the following error (not changed at all):

<>
/>System.ObjectDisposedException: Safe handle has been closed<>
/> 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.runTryCode(Object
userData)
at
System.Runtime.CompilerServices.RuntimeHelpers.



Programming Languages

Good afternoon everybody!

Crack 3 / 2 2 8 N o v e m b e r. 1969 4 1 M.C.3/2 M. V k r r w x s k lj k mr ix o f h oh e u d wlr q v n h h s wk.


I have this threaded
SerialPort wrapper that reads in a line from the serial
port. Here is my thread's code.


protected void
ReadData()
{
SerialPort serialPort = null;
try
{
serialPort =
SetupSerialPort(_serialPortSettings);
serialPort.Open();
string data;
while
(serialPort.IsOpen)
{
try
{
data = serialPort.ReadLine();
if (data.Length > 0)
ReceivedData(serialPort, new Rec
C & C++ & C#

I am receiving data from a device that's sending information over
the serial port and I get this exception: 'ObjectDisposedException
Safe Handle has been closed'. It may happen within seconds to several
minutes and there doesn't seem to be a pattern. Another thing that
happens is that it will stop receiving data with no exception and I
can see in the VS IDE output window tab that a thread has exited. I
have no idea why it's doing that also.


Here is how I
create the serial port:


DeviceSerialPort serialport =
new DeviceSerialPort('COM1', 9600, System.IO.Ports.Parity.None, 8,
System.IO.Ports.StopBits.One);
serialport.RHDataReceived += new E
Programming Languages

I'm having some problems with a wcf proxy in a winform. This wcf
service is hosted on IIS, exposes 2 methods and is working as it
should when I'm using it in a single thread winform (one call at a
time). The problem shows up when I use the same proxy (same instance
or 2 separate instances, it doesn't matter) in different threads, I do
get an error : 'Safe handle has been closed'.


What I
really don't understand is: if I start some threads that all call the
same wcf method, it works fine. The problem only occurs when I start a
call to one of the wcf method, start another call to the second wcf
method and that this second call finishes before the first one is
done. To cla

Programming Languages
So this is a rather small question with a big explanation. As is noted
by the title I am getting an unhandled exception telling me my Safe
handle has been closed. What I'll probably have to do is edit this
post a few times with more and more code to help me diagnose what the
problem is.I'm using POS for .NET to make a Service Object for my RFID
and MSR device. Although my devices are the same, I have 2 different
Virtual COM Port chips that communicate to those devices. One by
Silicon labs, the
Programming Languages