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The first solution I found was to close everything and restart my PC.
And after that the program started to execute again.
I am kind of blanked here right now, can't seem to find the reason behind this error.
The error messages below will appear any time your executable can't be written to. The most common cause is that your application is still in memory (even when you think it isn't) and as such cannot be overwritten.
Could not copy "obj\Debug\WPF.exe" to "bin\Debug\WPF.exe". Exceeded retry count of 10. Failed.
Unable to copy file "obj\Debug\WPF.exe" to "bin\Debug\WPF.exe". The process cannot access the file "bin\Debug\WPF.exe" because it is being used by another process.
Open Task Manager to see if WPF.exe is still in memory and kill it if it is. Alternatively, execute the command below to force it to be killed.
taskkill /f /im WPF.exe
If you ran the application using Ctrl+F5 you won't get the stop debugger buttons you're probably used to and might not notice that it is still running. Alternatively, you might have some code in the application that is preventing it from shutting down cleanly which results in the main window going away but the application staying in memory.
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So I recently started using Visual Studio 2017 for my C# class.
I recently created a code that I saved and wanted to see if it work properly. So I build the solution and it went successfully. I looked up the application(exe) file and opened it but immediately the command prompt would close so i don't even get a chance to view that the code worked. Is there anything I can do so I can view the code in the command prompt and properly run it so i can see it work correctly.
Any Help would be greatly appreciated!
Quick Note: I tried doing ctrl + f5 key to run the program but for some reason it doesn't work on my laptop nor do anything
It sounds like the program actually finishes and therefore closes. Adding a
Console.ReadLine();
at the end of your program will require an enter key press before closing.
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I have recently started C# programming, after having a crack at making my own calculator using Windows Forms i have started getting this error message :-
Error 1 Could not write to output file ' c:\filepath\obj\Debug\My
Calculator.exe' -- 'The process cannot access the file because it is
being used by another process.
I have tried turning off my anti-virus
It isn't already running
Im not very experienced so i don't know how to write my own code to bypass this error and can find anything useful information on the internet.
Step by step help tips are always welcome :)
edit: i thought it was too obvious too write down but the program i am creating isnt running (even in Task Manager) and im am using VS 2012.
This problem usually happens when you try to start the program but haven't closed it after you started it last time.
Things to try:
Close your program (the forms you developed)
Restart Visual Studio
If nothing works, open task manager and look if your program is still running even if you can't see it on the screen.
You can find out which process is using a file by using this tool from Microsoft:
http://technet.microsoft.com/en-us/sysinternals/bb896655.aspx
Further to Cosmin's answer, you may have the file in your clipboard, try copying another unrelated file to ensure that the exe is not in your clipboard.
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I created a simple WinForms application with a Button on it on a certain location (just dragged and dropped it from the toolbox, so it landed somewhere in the middle of the form) and when pressed the F5, it worked okay.
But, then I closed the form and got back to the studio. I just dragged and dropped the Button somewhere else and now when I run it with F5, in the running program the Button remained at the same location like before.
I cleaned the solution, rebuild it manually and run again. The same happened.
I dragged and dropped the button again somewhere else and the situation was the same as for the first time.
After 2 or 3 complies finally it worked...
Have anyone of you met this problem before? What's the solution? Thank you.
It sounds like you checked the "don't compile automatically when build is out of date" checkbox.
Check Options -> Projects and Solutions -> Build and Run. My guess is it says "Never build" and "Launch old version".
EDIT:
Well, since we can't replicate this issue, it's really hard to help. The last thing that comes to my mind is - export all your VS settings, reset them to C# defaults. If that helps, you can compare the exported settings with the defaults and look for weird stuff.
If it doesn't, try disabling / removing all the plugins you have (or perhaps it would be enough to run VS in safe mode).
If that doesn't help either, try disabling your anti-virus. This is really starting to dig for worms in sand, but it might be possible the AV is blocking file operations.
If even that doesn't help, it's time for the reinstall-VS-and-.NET rutine.
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I have an automated UI test written in C# (using MSTest) that runs on a remote virtual machine. Parts of this test utilize the user32.dll mouse_event method in order to click certain areas of the screen that are not otherwise interactive.
This test works fine when I run it locally, and also when I run it remotely with the agent computer being remotely connected to (via the MSTSC console). The problem is that whenever I completely minimize the MSTSC console (or altogether close it), the mouse actions are not being performed as they should be, and my test fails.
It should be noted that the remote computer runs Caffeine which prevents it from logging off or activating a screensaver - so the tests should run as usual (and the parts that do not involve mouse indeed work just fine).
I reckon this issue has something to do with the mouse being offscreen -- has anyone encountered a similar issue and could offer some help? Thanks.
It seems that the problem is due to RDP's default behavior, which locks the remote computer when the remote window is minimized.
I have managed to override this behavior by following the steps described below -- unfortunately this requires modifying the registry on the computer running the MSTSC console. Also, it is not possible to terminate the remote session, otherwise input is again disabled (and I haven't found a documented way to override it as of yet).
To allow remote desktop to be minimized:
Open regedit and navigate to the key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Terminal Server Client
Create a DWORD value with the name RemoteDesktop_SuppressWhenMinimized and value 2.
On 64-bit OS's, repeat this for the registry key: HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Terminal Server Client as well
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I made a tool using windows form in visual studio, that searches for different keywords (linear search) from a long text file. It randomly freezes sometime after clicking on a filter button (says not responding). If I try doing the exact same steps after restarting it, it will work fine.
How can i track the issue? Break points won't help as the program is big and I don't know where should i place them.
Also if you let it remain frozen for sometime, it does work successfully and then start freezing again at the same point.
Hook up a performance analyzer (perfmon works if it happens within a few minutes) and watch some important values such as:
Time spent in garbage collection
Large object heap size
Total heap size
logical thread count
physical thread count
disk activity
If none of this points to any obvious problem (such as large object heap fragmentation or leaking references), then you can also pause the application in Visual Studio. For instance, run the application using Visual Studio's Run button, and then when your application says not responding, you can push Visual Studio's Pause button and open up the thread Window and get an idea of what is causing the problem and what's running at the time the UI thread is blocked for so long that Window's says it's "not responding"
Use a log file (or a UI element on a separate thread, depending on the type of application) to indicate to yourself where you are in the processing of the file when the app stops responding. Run the application repeatedly and look for a pattern related to where the app stops.
Does the app appear to stop after a certain amount of text has been processed?
Does the app stop on a certain combination of characters?
Does the app stop when it tries to process an element with a certain characteristic (such as size or complexity)?
After you've gathered some basic data, you can start adding information to your log that seems to relate to the patterns you're seeing. Write out information such as how much memory is being consumed, etc., to try to narrow down the specific pattern that is causing the crash.
The log file is a way to try to get information about the state of your application, the state of the runtime, and the action that was being taken when the crash occurred.