I've completed a C# program which uses winforms and Microsoft.Speech (both recognition and synthesis) library, built it and it runs fine on the same computer. However when I copy the whole application directory to another computer the program starts and shuts down immediately.
Things I have tried:
Main method has a try-catch which prints all exceptions. I've tried
running the both straight from the directory and command line, both
resulting identically the program closing immediately without any
exceptions thrown
I've checked that the computer I'm trying to run the executable on has the correct version of .NET framework (my executable uses 4.5.2
and the computer states it already has a newer version)
I've also downloaded the Microsoft.Speech libraries on the new computer, no effect
Obviously I have gone wrong about the whole deployment task here. Most of the beginner guides suggest using the Setup and Deployment project template, but that is no longer supported in Visual Studio. As this is a whole new area of programming to me I'm now completely lost on how to proceed. Please help.
add a try{}(Exception ex)catch{} statement and within the catch statement you write the ex.toString() to a file, so you can read the error.
Related
Here is my problem:
I've created a little app to communicate with a server, nothing much particular. I'd like to publish it so I can give the app to my friends but after being published, I click the setup, it asks me to install, and after a few seconds, closes and nothing happens.
I've tried to "publish" the app with a Setup project, it installs and when I try to open the app, nothing happens.
I looked for solutions but nothing worked for me. Do you have any ideas?
The programm is under Visual Studio 2019, .NET 4.7.2
This could be related to different reasons, like lack of runtime ( .NET framework runtime ) on target machines or application behavior as well ( you did not tell much about it).
You could use some logging framework like NLogger or Log4Net to save in a log file at least critical errors and warnings so that you could see on target machine directly what the issues are.
in general if you properly used a setup project that should make sure your installer checks for dependencies like .NET runtime and also creates a desktop shortcut,
if you are publishing via ClickOnce you can easily specify in there to create a desktop icon and to include or download pre-requisites during installation phase.
Are you sure the issue is not related to exception handling and some failure happens when application started and tried to communicate with your server and for whatever network setting or reason fails to do so and then silently crashes?
If you try to connect to the server at the initialization of your program (form_load, etc.), it can happen when the connecting to the server fails. The whole application waits to reach a timeout, which may be 30 seconds long. Please check this scenario. See if the server is available and connectable.
I've upgraded my Windows to 10.0.16299 (latest) and my Visual Studio to 15.5.1 (latest). Since then, I am seeing this error message when I clean or build my Xamarin solution containing an Android project:
obj\Debug\android\src\android\support\customtabs\CustomTabsClient_CustomTabsCallbackImpl.java:4:
error: error while writing CustomTabsClient_CustomTabsCallbackImpl:
obj\Debug\android\bin\classes\android\support\customtabs\CustomTabsClient_CustomTabsCallbackImpl.class
(The process cannot access the file because it is being used by
another process)
I figured that the locking process is Visual Studio itself after I tried to run and debug the app.
The issue appears no matter whether I want to run the app on an emulator or a connected real device.
There's lots of advice what to do when a process locks a file including SO such as the famous the process cannot access the file because it is being used by another process. However, all provided answers don't help as Visual Studio itself locks the file and the only workable workaround is to restart Visual Studio - that's not a solution.
What is causing this file to be locked? Any idea? Any advice?
Sometimes it helps to kill the MsBuild.exe. Also, you could find other solutions such as described here: Xamarin Android project cannot build....
Basically, it seems to be a problem with Studio 2017 Version 15.5. It will be fixed with the next versions probably.
Darn it, my suggestions won't fit in the context of a comment, so here goes:
Sounds like the process being debugged, or the emulator hosting the debugged process, itself, has not fully closed down, and is in a hung or semi-hung state. Have you checked the process manager to see if this is the case? You may want to to try adding Environment.Exit() to see if this helps come back to a good state.
Another thing to check is, whether your access levels are the same between the two machines. Check not only the PC, but also at the emulator as well. Check everything, and ensure the access levels/modes are identical.
Finally, try running VS 2017 in administrator mode, and see if the problem persists. It's entirely possible that the level of access that you used to run pre-Windows 10 is different in the Win10 world that you live in, now.
I have created a win form application in c# with sqlce. I followed the steps here http://erikej.blogspot.dk/2013/10/sql-server-compact-4-desktop-app-with.html making some tweaks along the way since I was using sqlce 3.5 .net and that blog was talking about 4.0 .net.
When I finished the application, I created a set up project and build it which gave me an msi and setup file.
Now when I run this set up on my own machine where I developed the applicaton, it works a charm.
I tried it on a friend's machine as well, it worked well, he had visual studio 2010 as well on his machine.
Now when I tried it on 2 other machines with VS, after installation, on launching the exe, it launches and immediately closes, I do not see anything although.
I know it launches as i look at processes from my task manager it shows it in there for like 3-4 seconds and its gone.
I tried using this Not able to run the .exe file created from c# where i wrapped the try and catch around all the code inside the root win form but no text file was created with any errors.
On doing some research, it says it could be because I am missing some dll's, how do i make sure all the dlls from the references would be copied into the project ? I set all dll's to true for copy local.
Is this something else and not related to dlls?
I really just want to be able to install the application on any machine without any problems.
Thank you for your time.
EDIT
I need to add that this was a project that involved using an XBox controller sending data to a wireless receiver that was hooked to a PC. I used the XNA framework to intercept these and display some form of output on the Win Forms.
When packing and installing/deploying an application that makes use of the XNA DLLs on another non developer machine, the XNA framework needs to be installed.
My solution was packing my application along with the xna installer and so the xna framework installs as a prerequisite and then my application installs and then it no longer crashes.
Thanks to mrlucmoring and Mark for their support and troubleshooting.
I have a program that I built that reads and writes files. I built it in Release mode, then tried to run the exe on Win7. At first, with troubleshooting on, Windows simply told me the application closed and it was looking for a solution. After a few seconds, the dialog would disappear and show nothing more.
So with some significant effort I got the debugger attached to the process, but it was only showing me disassembly, which tells me that the error taking place wasn't in my application code, but in the framework somewhere.
The strange thing is that when I let the debugger attach, then press "stop" in VS, and exit the debugger, the program actually runs at that point!
So now I'm stumped. I have an application that builds, that seems to be having a permission error when I run it, but if I let the debugger attach then close it, it runs, and there's no Exception to really look at.
How I troubleshoot this issue?
Edit: Responding to Merlyn:
It's a custom app written from scratch in c#. The only dependency it has outside of core .NET namespaces is the Ionic.Zip DLL.
Visual Studio 2008 (Writing in C# 3.5)
Windows 7 - Home Premium, v6.1 build 7600
CPU - x64 quad core
CPU are you compiling under: Any CPU
I haven't tried it on another machine or a different version of VS.
Edit: I was able to try the compiled version on another win7 computer, and it worked without issue, so it looks like a security (?) issue on my computer only.
Try it in the debugger with Just My Code disabled and Native Code enabled, then check the call stack.
Also, what happens if you run it directly in Visual Studio?
Uncheck Enable Visual Studio Hosting Process in Project Properties and see whether it still works in VS.
I'd suggest sending the issue to Microsoft support. Especially with the data given here, you will have an easy time convincing them it's their problem. You might need an MSDN subscription for that.
I'm finishing up a C# app for work, and looking to make a ClickOnce installer.
Right now, I just want to make sure the installer works and that I am able to run the exe without Visual Studio.
So I set up my project to require Windows Installer and .NET 3.5 SP1, and tell it to download from a vendor (I'll be including the components later, but not for this test). It's just a basic utility that won't need updates, so I disable updates and tell it to use a CD/DVD install method since I just want to run it locally. When I run the resultant setup.exe, I get the installation prompt, and MyApp appears in Add/Remove Programs. But, as soon as the installer finishes it crashes with this message:
[MyApp] has encountered a problem and
needs to close. We are sorry for the
inconvenience.
The same message pops up when you try to run the .exe. No Start Menu folders are created during installation. I tried doing away with creating the setup file altogether so it just generated the .application file, but I still got the same error.
Am I missing something obvious? My app compiles in Release configuration and runs just fine. Is ClickOnce just not supposed to work with regular WinForms applications?
This question:
WPF application crash after ClickOnce publish
Sounds similar to my issue, but I'm using Windows Forms, and thus not getting an XAML exception. It just refuses to run.
A good place to start is to add a handler for the AppDomain.UnhandledException event. This is the event which is raised when an exception occurs inside your code and is not handled by a try/catch block (or is re-thrown and never handled again). .NET's behavior in this condition is to close the application--from it's perspective there is a runaway error.
In this event handler, you should--at a minimum--log the error in a manner that ensures it will be written before the application closes. This could be a very rudementary MessageBox to show the error contents, writing to a text-file, or (preferably) writting to a common logging location.