I am developing a WP7 app.
The app has a pretty large XML Parsing method and a try/catch block around it. When an exception occurs I just get the causing method's name from the exception's stacktrace, but no line numbers.
So it is pretty annoying to debug in a 400+ LoC method.
My guess is that the pdb files are not deployed to the phone at all.
A workaround would be to split large methods into smaller ones and to use more and smaller try/catch blocks.
But is there any way to enable line numbers in Windows Phone 7 Exceptions?
First of all, a 400+ LoC method is a bad practice, I would definitely recommend to split it.
Little trick: if you're using the debugger, just configure it to break on any exception (in Visual Studio, press Control + Alt + e, and check the 'thrown' checkbox in front of "Common Language Runtime Exceptions". Then, when the exception is thrown, the debugger will automatically stop at the exception location.
Now to answer your question, if you don't have line numbers when compiling in debug mode, then there's probably no practical way to get them. You can try injecting the pdb in the xap file, but I don't think it's worth the trouble.
Related
I swear I used to remember Visual Studio just breaking on an exception. It would take you straight to the line where the exception was thrown and allowed you to inspect variables just by hovering over them.
Or maybe that was a dream. Or maybe this is a nightmare.
But it's actually not a problem, right, because now instead of it just working all you need to do is go to Debug > Windows > Exception Settings where you get this mess.
Which has many glaring problems. For example:
Remember when I said it used to just work?
I don't have all these Exception types memorized.
Clicking toggle all on/off removes your previous selections.
Oh and also, clicking this checkbox does absolutely nothing
It used to just work. Is it possible to get it back to just doing that?
Under exception settings, Go to Common Language Runtime Exceptions->check all. This will not break your application, but show you the exact line of occurrence of the exception.
Per that first image you posted, it appears the application is throwing an exception in "external" code, so you likely have the "Just My Code" enabled in the debugging options. Try unchecking that "Just My Code" option via your Tools|Options dialog (Debugging\General category), and that'll likely fix you up.
It's been bothering me since Xcode 6, that whenever I set 'All Exceptions' without any other breakpoints, Xcode would stop at start when I init a UILabel view wrapper in RootVC.
If I try to remove the causing line, another "random" line would trigger it again. Thoughts on what caused the exception?
This breakpoint comes from an exception that was thrown by TFileDescriptorContext. All Exceptions halts also on C++ exceptions.
It gives you a good indication where the problem comes from. Take a look if all fonts that are listed in Info.plist are part of your application bundle.
"Normally" you are not interested in C++ exceptions when you are in Objective-C, so feel free to ignore them.
Edit: This problem has been discussed several times here on SO. Updating when I can find the posts again which might give you even a deeper insight.
I am making a windows phone 8 application and in the designer view in both blend and VS I get "Unable to determine application identity call" error as a dialog box.
From what I read on stack this is propably because of the Isolated Storage is getting run and the designer can't handle it.
I am wondering is there away I can get some line numbers or something where the errors are happening instead of having to manually go through the code?
By the time you see this message box it is already too late, the exception was caught and handled. You have to catch it when the exception is raised. Which is not so easy to do at design time.
One technique that's worth a shot is to use a debugger to debug Visual Studio itself. Start it again and use Tools + Attach to Process. Locate the first devenv.exe in the list of processes and select it. Set the Attach to: setting to "Managed (v4.5, v4.0)" and click OK. Let it trundle to find the PDBs (takes a while). Debug + Exceptions, tick the Thrown checkbox for CLR exceptions.
Switch back to the original instance of VS and do whatever you did before to trigger the error. The 2nd instance will break in when the exception is thrown. Which some luck you'll see your code on the Call Stack window. If the debugger doesn't break then repeat the exercise but attach to XDesProc.exe, the XAML designer. Good luck with it.
Isn't this
Unable to determine application identity of the caller?
or
Getting Unable to determine application identity of the caller Error
are the same topic????
Don't know, just asking...
Sorry for any inconvenience..
Just answered in my basic question.
I'm afraid, i don't know how to get exact string number, just keep in mind that Designer cant have an access to the IsolatedStorage and check all places where you're working with IsolatedStorage. Basically, what you need to do is to add to all constructors a lines
if (ViewModelBase.IsInDesignModeStatic)
return;
If you're working with MVVM Light, or
if (System.ComponentModel.DesignerProperties.IsInDesignTool)
return;
which is pretty the same but without MVVM Light.
Also, i edited my answer there.
I'm currently (trying) to develop an app with Worklight Studio 5.0.6 and Dojo (Mobile) 1.8.3. I have a really hard time to to find a proper method for debugging. After waiting 5-10 minutes for the build an deploy-process on the server, an error usually looks like this in the Chrome debugger:
How am I supposed to track down this error in MY source? The whole stack trace consists entirely of Dojo code which generates an absolutely useless error message after 20 abstraction layers.
Seriously, how do you guys handle this in real life? What methods do you use for debugging Dojo-driven apps in the browser?
spyro
For dojo.parse errors, I find it useful to pause the Chrome debugger on all exceptions (the purple icon on your screenshot, should be blue). You usally get more details about the cause of the error, the name of the DOM node being parsed, etc. in the first exception being raised.
Rémi.
Debugging dojo based application should be the same as debugging any javascript application.
Usually I will follow these steps:
add console.log() somewhere in code: this is fast and most of time this is enough.
set breakpoint in debugger: if step 1 is not enough, you can base on error information to set breakpoint before error line, then step in or step out.
comment out recently changes: for some error which is hard to find the error line, for example, parse error in your case, the good way is comment out your recently changes one by one till back to your last working version. Or, return to your last working version, then add code back one by one.
Create a simple application to reproduce the error : if your application is very complicate and it is hard for you to follow above methods, you can try to create a new application which mimics your current application but with simple logics and try to reproduce the error.
Based on experience : Some errors, for example, extra ',' in the end of array which works at chrome and firefox, will report a nonsense error information at IE. Debug these kinds of errors is very difficult, you can base on your experience or do a google search.
Did you provide isDebug: true in your dojoConfig? Also, try to see if the same occurs in other browsers.
Update: I recently discovered that there are issues with Google Chrome and Dojo debugging and I think it has to do with the asynchronous loading of files. As you can see in the provided screenshot of #spyro, the ReferenceError object is blank (which you can notice because of the empty brackets {}). If you want to solve that, reopen the console of Google Chrome, (for example by tapping F12 twice). After reopening the ReferenceError should not be empty anymore and now you can expand that object by using the arrow next to it and get a more detailed message about what failed.
Usually what I do in situations like that is to place a breakpoint inside the error callback (line 3398 in your case) and then look into the error variable ("e").
I am not sure how familiar you are with the Web Inspector, but once you hit the breakpoint open the Web Inspector 'console' and check for the error properties "e.message" and "e.stack" (just type in "e.message " in the console).
Also, during development it is better to avoid Dojo optimization / minification, which greatly improve your debug-ability.
Bottom line is to try to place the breakpoint before the error is thrown.
Clickonce deployment of a Winforms application results in "null reference" error in InitializeComponent(); Running the executable directly does not produce the error.
Any ideas as to why that might happen?
edit:
Seems to be related to getting the value of Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)
This is not a ClickOnce problem per se, it's a problem with your application. If you track down the exe file under \apps\2.0\obfuscatedfoldername\obfuscatedfoldername\xxxx...tion... (where xxxx is the 1st four characters or your assembly name) and double-click on it, does the application run? Probably not.
Put some try/catch statements in with a messagebox showing the exception if it has one, to try to figure out exactly what line of code is causing your problem. It doesn't make sense that it would be Environment.GetFolderPath, unless you're doing something weird with it, so find the exact line causing the problem and post it back here.