Home > Is Denied > Access To The Port Is Denied C#

Access To The Port Is Denied C#


To reproduce it, open an active port, and once it starts receiving data, close it. The port is probably already open or the context that your code is is running under does not have access to the resource. But results in the "access denied" error. Print Go Down Pages: [1] Topic: C#/XNA - Access to the port 'COM2' is denied.(Read 2667 times) previous topic - next topic Jhon Doe Newbie Posts: 6 Karma: 0[add] Arduino rocks navigate here

Different tasks, same characters Why are copper cables round? View my complete profile Blog Archive ▼ 2011 (10) ▼ Dec 2011 (1) System.UnauthorizedAccessException: Access to the ... ► Sep 2011 (1) ► Jul 2011 (1) ► Jun 2011 (2) ► But your code has the Open() call inside the while loop. Home Forum Quick Links FAQ Photos Community Videos TR Videos Robot Projects Tutorials FAQ/Rules Advanced Search Forum Robotics Arbotix, Microcontrollers, Arduino Access Denied to Port??!! http://stackoverflow.com/questions/7219653/why-is-access-to-com-port-denied

Access To The Port Is Denied C#

PaulS Brattain Member Posts: 74,155 Karma: 1918[add] Seattle, WA USA Re: C#/XNA - Access to the port 'COM2' is denied. #1 Jan 06, 2010, 11:22 pm What else do you have Sign In·ViewThread·Permalink Re: Safe Parallel loops tvbarnard21-Oct-09 4:06 tvbarnard21-Oct-09 4:06 Hi, thanks, but I'm not sure I quite understandHow would I restructure my data, and how do you propose I Christian GrausDriven to the arms of OSX by Vista.Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Running require('fs').readFileSync([path/to/lib]) returns the buffer containing the files content as expected... (Without any error) I might be on the completely wrong track here - but perhaps it's worth looking into this. The real solution is simple, just move the Open() call before the while loop. I've tried running node as administrator. Primopdf Exception Access To The Port Is Denied This code example is part of a larger code example provided for the SerialPort class.

WIN7x64 Collaborator voodootikigod commented Jan 5, 2015 I have things running perfectly fine on my surface here. System.unauthorizedaccessexception Access To The Port Is Denied Send form result back to twig Output N in base -10 What is the difficulty of an encounter when a monster can transform? the first connect works fine, and I can communicate with the device, however if I refresh the 'page' (remember this is node-webkit) it errors, also if I run port.close(openPortAgainFn) I can https://msdn.microsoft.com/en-us/library/system.io.ports.serialport.open(v=vs.110).aspx This documentation is archived and is not being maintained.

If the USB cable is unplugged before SerialPort.Close() is called, this unhandled exception will be thrown and cannot be caught. Access To The Port Is Denied Iis Re: C#/XNA - Access to the port 'COM2' is denied. #3 Jan 07, 2010, 02:47 pm What is the purpose of this:Code: [Select] _serialPort.Close();
I'm going to close this issue for now. Friday, December 2, 2011 System.UnauthorizedAccessException: Access to the port is denied This exception can occur in an application that is communicating with a USB device via a System.IO.Ports.SerialPort object.

System.unauthorizedaccessexception Access To The Port Is Denied

C# Lifesaver C# .NET tips, tricks, and tidbits that have saved me as a software developer. Let's work to help developers, not make them feel stupid. Access To The Port Is Denied C# If you have a USB to serial device, unplug it, wait a few seconds and try again. Access To The Port 'com4' Is Denied if(!serialPort.IsOpen) serialPort.Open(); Monday, March 01, 2010 3:06 AM Reply | Quote 1 Sign in to vote Either insert a delay betweenclosing the port and trying to open it again, or

SerialPort.Open Method () .NET Framework (current version) Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.5 .NET Framework 3.0 .NET Framework 2.0  Opens a new serial check over here Jhon Doe Newbie Posts: 6 Karma: 0[add] Arduino rocks Re: C#/XNA - Access to the port 'COM2' is denied. #2 Jan 07, 2010, 08:28 am Last Edit: Jan 07, 2010, 08:37 Christian GrausDriven to the arms of OSX by Vista.Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks. Collaborator jacobrosenthal commented Mar 2, 2015 This may or may not be your problem, but In my case you cant open a port thats trying to open. Unable To Open Serial Port Com1 Access Is Denied

Probably it's a bug in driver. Not the answer you're looking for? I've tried to purge the Node Serialport reference from the require cache, but that didn't work. his comment is here Powered by Blogger.

Insults are not welcome. Portmon For Windows Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you! Maybe this will help out somebody out there.

I can open the port just fine in realterm.

Sign In·ViewThread·Permalink Re: Problem in accessing the COM port. "Access denied for COM1 " stancrm20-Oct-09 23:49 stancrm20-Oct-09 23:49 Check your system, probably there are some process that watch your COM Thanks! Instantiate the serializer (and port) outside "private void timer1_Tick(object sender, EventArgs e)". C# Serial Port Example WIN7x64 — Reply to this email directly or view it on GitHub #333 (comment) .

Visual Studio Languages , .NET Framework > Visual C# Question 0 Sign in to vote While sending a command thr' SerialPort COM1, my API Open() is throwing an Exception!try{serialPort = new When I load my form, it runs the code serialport1.open(); And it works fine, I can get what I need from serial port however when I reload the form, it gives Thanks. weblink Terms of Service Layout: fixed | fluid 12,677,021 members (28,439 online) Sign in Email Password Forgot your password?

Print Go Up Pages: [1] This link has expired. Thread Tools Show Printable Version Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 08-23-2010 #1 cloud_skyblue View Profile View Forum Posts Private Message My answer is, No. I used the lazy opening pattern by adding false so I could still explicitly open.

thank you! –Csharpz Aug 28 '11 at 14:36 add a comment| up vote 2 down vote In addition to Hans' answer: I had the same problem and played around a bit cinderblock commented Jul 8, 2015 I'm having the same issue. Hartner 1215 add a comment| up vote 0 down vote Hans' answer supercedes this one; I am leaving it for context and informational purposes only. I have checked to se if some other application uses the Serial but i can´t find anything.Here is my Code to get serial data into the game:Code: [Select]using System;
using System.Collections.Generic;

Understand that English isn't everyone's first language so be lenient of bad spelling and grammar. This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Top Experts Last 24hrsThis month OriginalGriff 180 Peter Leow 125 ProgramFOX stancrm20-Oct-09 21:45 stancrm20-Oct-09 21:45 try that :http://www.bleepingcomputer.com/forums/lofiversion/index.php/t61665.html[^] Sign In·ViewThread·Permalink Re: .Net-BroadcastEventWindow.2.0.0. Join them; it only takes a minute: Sign up why is access to com port denied?

I don't have a win 7 setup with your device handy. Application Lifecycle> Running a Business Sales / Marketing Collaboration / Beta Testing Work Issues Design and Architecture ASP.NET JavaScript C / C++ / MFC> ATL / WTL / STL Managed C++/CLI Your Email This email is in use. Related 0accessing COM port using ASP.net : access denied4COM port is denied1Access to the port 'COM5' is denied0Access To Com Port Is Denied (when detach the port cable)0Boost serial communication, COM

Treat my content as plain text, not as HTML Preview 0 … Existing Members Sign in to your account ...or Join us Download, Vote, Comment, Publish. Just saw this or something similar today testing some windows stuff. Monday, March 01, 2010 3:35 AM Reply | Quote 0 Sign in to vote Second option worked for me!