I just got an ASP.NET 5 Web API Application running in Visual Studio code by following this guide and I can launch the application by executing the command "dnx . web". How can I make the application build on the fly when I make changes to the source file ?
Update - This seems to be an open issue. Link 1, Link 2
dnx . web --watch is the command that you are looking for.
However, there is a caveat when you do that from command line: when a file changes, the server is stopped.
When you do the same from VS 2015, VS knows how to restart the server when it stops.
I noticed I had the same problem, and it seems to work more or less as expected if you run your site without the debugger attached.
I think the debugger is more sensitive to changes in cs files, and does't want them to change while it's trying to trace/step through them.
At first I thought it was related to the CLR type you use to run it, but I can change that and it works as long as youre not debugging.
Related
I have a problem debugging a web forms application that is configured to use IIS for debugging, under Windows 7 and Visual Studio 2010. An example has just occurred, where I make a change to the code behind for a web form, save, and apparently rebuild before starting the app using F5.
The app starts, and I get an error message trying to do something in the app. I tell the debugger to break when an exception is thrown and try my task again, only to be told
The source file is different from when the module was built.
where the module is C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root\9d7b45ca\11a98b19\assembly\dl3\5e6cf0b2\636409d4_dfeecb01\PerfixEMS_Admin.DLL
The physical folder for my test web site is set to the web application project's source folder, so I have always assumed that IIS will look in the bin folder for required assemblies, and these will be rebuilt as expected. Why is this not happening?
Cleaning the solution usually works for me.
Update
Given the high number (320) of projects I understand why Clean and Build won't work for you. You should however try it at least once to see if fixes things.
If it does fix your problem but doesn't last you'll need to do one of two things.
Clean just the one file
Delete the offending temp file. You probably won't be able to do this because with VS running since it may have a lock on the DLL. You may also have to stop IIS. You can use Process Explorer to look for the processes that have a lock.
Use a custom solution
Its unlikely that you're going to be modifing all 320 projects at the same time. Create a custom solution for just the projects you're working on. You'll still be able to step through any project you have the DLL and PDB for if you need to.
Which to do
Using a custom solution has its problems since you can no longer use project reference for projects not in your solution. This impacts your team's source control. You'll also have to make sure the DLL's and PDB's from outside your solution are in a stable location and you'll need a way to detect when thoes other projects have changes that you care about.
These problems can be overcome with a careful check-in process for Project changes and scripts that copy files and working with team members to figure out how to communicate changes.
On the other hand closing VS for every change or running Clean and build isn't really tennable either.
it may be a workaround, but I just need to see if it will work or not, then we may investigate more in the original case. but for now, try this:
1- publish this website to a different folder
2- open the newly published version from your preferred browser (ex: http://localhost/APP_NAME).
3- from VS, open "Debug" menu, choose "Attach to process..."
4- select the IIS worker process "w3wp.exe" and click "Attach".
(if you can't find it, make sure that the checkbox "show processes in all sessions" is checked)
5- start debugging your source code normally and let me know what happened, thanks.
My company gave me a web application project and I went to debug it and set some breakpoints and they dont fire. I am using Response.Write all over the place to debug. Anyone know what maybe going on?
I am running the application off my localhost I was pushing F5, but since the breakpoints dont hit by making changes and adding Response.Write statements and clicking save then refreshing my browser I get the changes for whatever reason.
Hovering over the breakpoint it says "The breakpoint will not currently be hit the source code differs from the original version"
Another tidbit is I created a new web application project and created a breakpoint and it works, its only specific to this application it seems like, but dont know what it could be?
Hovering over the breakpoint it says "The breakpoint will not currently be hit the source code differs from the original version"
Try this:
Close Visual Studio and make sure any instances of ASP.NET development server are closed as well
Delete everything from "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files" (where v4.0.30319 is the version of your .NET Framework)
Definitely need more info, but I would check that your are building with debugging symbols to cover the dumb stuff.
Okay, after reading the comments posted on your question I was making the following assumptions.
You are running using the built in VS development server
You are compiling in debug mode
You've set debugging true in your web.config
I've seen this problem before and for me it's been resolved by restarting Visual Studio.
Assuming that you are running on IIS on the same machine that you have visual studio installed:
Have you attached to the application pool process
Is you code the same as what is deploy? (Is the latest version deployed)
Are you logged in as administrator?
Are you running visual studio as administrator?
Just to make sure, you are running in debug mode?
I ran into this problem a while ago as well, instead of using response.write, you could try outputting the data to a label control's text value instead to see the values of your code.
It's a bit of a sloppy work around, but I couldn't figure out why that one particular project I was working on didn't let me debug it.
This problem is, for me, mostly caused by a mismatch of the loaded dll files (symbols) by webserver, and those that the project are pointing to when you try to breakpoint. It's different files. I have located different causes. One could be a simple hang-up by webdev instans (force shutdown. But also that there occur some kind of mismatch if you got different compilation methods between project within same solution as the web project.
This desc may not be your exact problem, but perhaps it will lead you into right direction. I find this often being a dirty unlogic error that just are irritating (but also completely fixable without data loss or reconfiguring, when u understand the trick).
I had the same problem, and it turned out only Internet Explorer works with debugging and breakpoints. To avoid having IE as my default browser, I changed the launch settings in the .Web project to run IE with the path as command line parameters.
I know that many people have had this problem... but I am now having it and cannot solve the issue. VS 2008 is randomly giving me an error after working on a project for weeks. When I set a debug point, I get a warning: The breakpoint will not currently be hit. No symbols have been loaded for this document.
I have re-built the solution with no debug points and re-tried. I have also tried to Load Symbols from path and that has not worked either... Can someone please help walk me through the necessary steps to getting my debug function working again.
Thanks.
Delete the solutions suo file. This has fixed weird debugging problems with breakpoints every time for me. Note, you will lose your solution settings, such as bookmarks, breakpoints, and such.
1) Does creating a new project work? If so, you have a corrupted settings somewhere. Moving your files over to your new project would be the easiest procedure to resolve your issue.
2) Does taking your solution to another PC work? If so, then you have an issue with your environment.
Try these checks in order:
1) Select your Configuration Manager, check if your CPU is "Any" or your "x86" or "x64" depending on your hardware.
2) Try remove all the other configuration other than Debug. Add a new Configuration based on your Debug and the CPU as Any
3) Drastic move.. close your visual studio and run the following
devenv /ResetSettings
4) Even more drastic move...
devenv /Setup
Good luck
There is a hotfix for Visual Studio SP1 regarding debugging issues here. It did fix issues I had with catching breakpoints in multithreaded source code. It also fixes other potential causes for breakpoints to be missed, so it is definitely worth a try.
Also, have a look at this SO question.
Regards.
I run into this occasionally and each time the solution is a bit different. This time I was using a different user profile to develop than I normally do in Visual Studio 2008 and found that I couldn't debug (breakpoints cannot be hit) shortly thereafter - on a solution with 2 vb.net projects. I ended up doing 2 things but I think the latter did the trick for me.
In the main projects properties, go to the Advanced Compile
Options button on the Compile tab and ensure the "Generate debug
info:" is set to Full.
Right-click on the main project and
select "Set as a startup project"
I'm going crazy and wasting a lot of time. I am running in DEBUG, checked the web.config to ensure debug=true is there, checked the code to ensure I am reaching it, cleared all temp files and pdb's. The only thing that works is to continually kill the solution, create a new solution and add all the projects again. I shouldn't have to do this every day.
If you're using Windows Vista, try launching Visual Studio as an Administrator. Even if you're already running as an Administrator on the machine, still right-click on Visual Studio and select "Run as Administrator."
Right-click the solution node in solution explorer end select Properties. Check the configuration settings in there.
If you are attaching to a process sometimes this can be caused by symbols not being loaded. If you see the code skip over your breakpoint hover over the breakpoint it will tell you if symbols were not loaded. If that is the case Here are several potential solutions to your problem.
Clear out all files in C:\Windows\Microsoft.NET\Framework\v2.0.50727\ASP.Net temp files.
Ensure you deployed the *.pdb files to the bin folder of your application.
The web process has not loaded your assemblies at the time you attach your debugger. Reset the process and wait a little longer before attaching to the process to give the process a chance to load your dll's.
Actually your visual Studio is not attaching your project with process WebDev.WebServer.EXE
Do the following Steps:
click on Debug Menu
Click on Attach to process WebDev.WebServer.EXE
Now your Debugging is enabled.
Intermittently when I start debugging a web application VS hangs (not responding). It will start OK if I run the appllication without debugging. When it has happened once it will do it every time until I delete the vbporj.user file.
This problem appeared when I moved to Win7 64bit. I am using VS2008 Pro and everything is patched up to date. I am using the internal IIS7.
Updates for Visual Studio 2008 SP1 debugging and breakpoints at http://support.microsoft.com/kb/957912.
Try deleting the solution user options file (.suo) where the debug/breakpoint information is stored. You will lose all solution user settings, such as breakpoint locations. When you have "funny" debugging incidents, this is the first thing to try because this file is easily corrupted.
Clear all your Visual Studio "temporary" files. Check out the "Clear Recent" script at http://missico.spaces.live.com/blog/cns!7178D2C79BA0A7E3!370.entry.
Modify it for your own needs. For instance, I dislike Flash, so you may want to remove the call to ClearStupidFlash and the other non-Visual Studio calls.