I recently have encountered a weird issue with my project: as soon as I click debug and it builds the project, it stops debugging. There isn't any error message, or anything else that comes up, including the form itself.
I've tried messing with the settings: no splash screen and I've even changed the startup form to a blank Windows form. What could be causing this problem? Is it Visual Studio or my code?
Probably your program is exiting normally. Set a breakpoint at the first statement to be executed, press F5, then single-step through the program until you get to the last statement executed.
If the first statement is never reached, then one of two things probably happened:
You're mistaken about which statement is executed first, or
The program is terminating during initialization, probably because a class constructor is exiting the program either normally or abnormally.
A few ideas:
Use Debug->Exceptions, and check all the checkboxes so you break when an exception is thrown.
Use Debug->Step into to step into your code.
Then you can use Step Over and Step Into (look at the menu for the keyboard shortcuts)
I found a solution, but not the problem.
How I fixed it:
I just created a template for each form, created a new project, and imported everything into the new project. One thing that I found useful is in the new project is to add an existing item (CTRL + D), and group select (maybe, don't know if you can) and select all the non-code/form/designer/etc. files (like text files or images) and then import them.
I have found a possible solution after I had the same problem.
You probably have more than one project in your solution (The main project, plus an "InstallShield" project",perhaps)
Make sure you have the main project set up as "Startup Project".
In the Solution Explorer, right click on the Main Project and select "Set as Startup Project".
Everything will then run OK.
If you get the error like: "The debug mode is program but there is no program specified....." Go to Solution Explorer then Right Click on main project's name and Click on Set as StartUp project. You can debug your program.
Related
When trying to open the form deisgn it says values cannot be null. (Parameter 'baseName'). I still can run the system without error. Dont know how to fix it and have to change some gui design. Help me its for my school tnx
I had this problem this morning and a few hours later I decided to just start over and copy the code from the old project to the new empty project. Everything is working in the new copy of the project. I copied from old to new by drag-n-drop. I copied all the UserControls before I copied anything that uses them, and built, then copied over the remaining things, and went through all the errors caused by the change in name of the top-level Namespace.
(All of the Namespace errors were in the .Designer.vb files. I have posted elsewhere "never edit those files by hand unless you know what you are doing." This case was one of the rare exceptions.)
I had the OP's problem that when I tried to open a Form in the designer, I got the message
Value cannot be null. (Parameter 'baseName')
It didn't matter if I tried to open the Form in Solution Explorer or by pressing Shift-F7 in the Form's code window. However, sometimes Shift-F7 resulted in a wait cursor followed by silence - no error message.
Like the OP, the project did run without errors (well, same bugs as before but you know what I mean).
Another symptom: If I launched VS and tried to open the Form designer before Intellisense was initialized, instead of the other error, the window that should show the layout of the Form showed this instead:
File path: full path of the file I was trying to open
Frame GUID: 2c01570-c72c-11d0-88c3-00ac0c9110049
Frame mode: VSFM_MdiChild
Error code: 0x80131500
There are no MDI containers in my project. It's a reference to VS 2019.
The same error occurred in every Form and UserControl in the project.
The same error occurred in any new Form or UserControl that I added to the project.
The error did NOT OCCUR in any and all other projects built in VS 2019 with a target of .Net 5.0
The error DID OCCUR with the same project on another machine running a clean install of a later version of VS 2019.
Attempts to Clean Solution or Clean Project failed, with a generic error message, it was something like "Clean Project failed."
Nothing about these problems appeared in any event logs.
Every time the problem happened, when I shut VS, one process was left running (per TM).
Here are some other things I did to try to suss it:
Ran a repair install on VS 2019 and reboot.
Opened each and every VS-generated file in another project and compared them line-for-line (most are text) against the corresponding files in the broken project. No data-independent differences.
Searched exhaustively with 3 search engines and many terms for someone else that posted about this error. This is the only post I found.
Deleted, renamed, or moved files that are automatically generated by VS, including some Json files, XMLs, and caches.
What I did not try:
Roll back the code to the most recent commit.
Uninstall VS 2019 completely, reboot, install VS 2019 as if an initial installation.
Just had the same experience. I took me a while before I got everything to work again, but the clue in my case was that I had added a new item to my project, and for some reason I had managed to delete the file name in the process so the only thing left was 3 new files with only the extensions .resx, .cs and .Designer.cs
I quickly deleted the ".cs" file but forgot the rest.
Suddenly I was unable to open my main form in the designer - and the “Value cannot be null. (Parameter 'baseName')” started to appear. It was only affecting my main form.
I tried almost everything described above except the reinstalling part.
But then I deleted ".Designer.cs" and ".resx" from within visual studio (Solution Explorer), and then the problem went away.
I started getting this error after using a hack to support generics forms (e.g. MyForm). The designer generated a file:
MyForm.resx
which worked for design time (even with the form being generic) but crashed at runtime. My hack was to rename the .resx file:
MyForm`1.resx
However that is when the Designer stopped working. It stopped working for ALL forms/user controls in entire solution (not just the generic I was experimenting with). I assume there is some kind of process that crawls all the resx files whenever you open any Designer and that is the source of the Exception.
I was able to work around the issue by:
Renaming the resx back to its non generic title (i.e. MyForm.resx)
Restarting visual studio.
So I am currently unable to open a Form and get the following error:
System.ComponenetModel.Design.ExceptionCollection was thrown.
or:
The designer loader did not provide a root component and has not indicated why
Usually the way to solve this is to open another instance of Visual Studio with the same project, attach the debugger to the other Visual Studio and try to open the form.
However, that does not seem to be working. The debugger does not break when the error is hit, and attempting to 'Break All' at any other point does not show me the source code and just the screen saying:
Your app has entered a break state, but there is no code because all threads were executing external code (typically system or framework code).
Attempting to put break points also results in:
The breakpoint will not currently be hit. No symbols have been loaded for this document
Am I missing a setting? Incorrect Setup?
I have been battling this for half a day and thoroughly search the interwebs with no luck thus far. My designer is also fairly complex and lengthy which means trial and error is an absolute last ditch option.
First attempt to resolve:
you may have tried it already. Right click the Solution in solution explorer, click "clean solution", this deletes all the compiled and temporary files associated with a solution.
Do a rebuild of the solution and try to debug again.
Second attept to resolve:
Start debugging, as soon as you've arrived at a breakpoint or used
Debug > Break All, use Debug > Windows > Modules. You'll see a list of all the assemblies that are loaded into the process. Locate the one you want to get debug info for. Right-click it and select Symbol Load Information. You'll get a dialog that lists all the directories where it looked for the .pdb file for the assembly. Verify that list against the actual .pdb location. Make sure it doesn't find an old one.
In normal projects, the assembly and its .pdb file should always have been copied by the IDE into the same folder as your .exe. The bin\Debug folder of your project. Make sure you remove one from the GAC if you've been playing with it.
third attept to resolve:
Disable the "Just My Code" option in the Debug/General settings.
there are might be other causes to your problem, i picked them from here. you may try other solution to try resolve your issues. Fixing "The breakpoint will not currently be hit. No symbols have been loaded for this document."
I'm working through a project in Visual Studio 2013 and I got the following error: "Visual Studio cannot start debugging because the debug target is missing". I've tried changing the build output path under Project -> Properties but it still doesn't work. So what gives?
Check your code and make sure you aren't missing a curly bracket anywhere. If one was accidentally deleted, moved, or misplaced, it causes this error among MANY others depending how critical the placement of the curly bracket is in your project.
^
I just recently had this problem in a project I was working on. I had highlighted to delete a section of code, and it took out a curly bracket with it. Unnoticed by myself, it took me a few days to finally realize that's what happened.
You won't get an error from the bracket missing, so it's stupid in itself and impossible to find at times.. but I had 51 errors, 7 warnings, and that "can't start debugging because the debug target is missing" error when I attempted to run the program, after the curly bracket went missing.
It's not to say that you might not have another issue going on that is causing this, but the curly brackets can wreak havoc if they aren't precisely placed. So it's worth checking into that before getting too extreme in options to "fix" the start error.
For future reference if this problem occurs again. Good luck.
Possible VS 2019 Solution
Right Click on Solution Properties
Go under Common Properties> Startup Project
Set Single startup project
Right Click on Project Properties
Click Application
Set Application Type to Windows Forms Application or Console Application or Windows Service
Click Startup Object
Set to Anything Other than (None)
Left Click on Project Properties
Set Copy Build Output to Output to True
Then Run
Hopefully that works for you
I just upgraded my Visual Studio from 2012 to 2013 and haven't done anything else yet short of installing all the updates recommended.
For whatever reason, when I go into my solution and press F10 or F11, it runs the entire program as if I had pressed F5... F8 works the way F10 used to, but I don't know why the keys I've always used now don't.
I set up visual studio as a VB environment.
How can I fix this?
Thanks!!!
Additional Info:
Just to add on as much information as I can, if I set a breakpoint in my code, then I can use F10 / F11 to continue stepping through my code once the breakpoint is hit and execution is stopped as would be expected.
EDIT 2013-12-31:
Based upon a comment made by Neolisk, it appears this is simply a change in default behavior in Visual Studio 2013... If anyone knows how to change this back to the way it was in 2012, that would be GREATLY appreciated, but at least I now know it's not an error / installation issue.
If 2013 works the same as previous versions, then do the following:
Navigate to Tools > Import and Export Settings
Choose "Import selected environment settings"
On the next screen, choose to save your current setings if you want to.
When you get to the point where you can import, just select "General Development Settings"
That should set everything back to what you're probably used to. Most people are set up using general settings and either don't realize it or just forget.
EDIT: If your issue is that the program executes when you press F10 or F11 when you are not debugging, then I think you might be out of luck. It's done that to me personally since VS 2008 (I'll frequently miss the F12 key when I'm in a hurry), and, after some searching, I think it actually happens to everyone:
Visual Studio - Prevent F11 from starting the debugger?
My guess is that this is a side-effect of not being able to set contextual hot keys based on whether you are or are not debugging. Since F10 and F11 are tied to debug-execution-related operations, my guess is that Visual Studio realizes that it needs to be debugging to process them, and thus starts the program.
ANOTHER EDIT: Of course, it's also possible that you had the scheme set to something else entirely in VS2012. Check out all of Visual Studio's pre-defined hotkeys by environment here: http://msdn.microsoft.com/en-us/library/da5kh0wa(v=vs.120).aspx
If none of those have the mappings that you're used to for F8, F10, or F11, then it's possible that you or an add-on may have had few custom hotkeys defined.
Worst-case scenario, you can simply redefine your shortcuts manually by key in the keyboard settings: Tools > Options > Environment > Keyboard
It sounds like you are in VB settings and not C#. You should try changing your settings to one or the other and see if those debug options change. On my machine
Tools - Import Export Settings - Reset All Settings - C# (If you want F10/F11) VB if you want F8/Shift-F8. It doesn't matter what your settings are you can still code in both languages, but if you are used to pressing F10 to debug VB.NET code you've been using C# settings this whole time. Nothing new with Visual Studio in this regard. I am using VS2013 Ultimate, have been using Visual Studio since VS2003.
The first image is VB.net, second is C# settings
You can try some of these reset settings:
And different combinations thereof, i.e. ResetToBasic first. If does not help, try ResetToC#, then back to Basic. Then try General, back to Basic. See if you can hack your way through like this.
EDIT: I tried my VS 2012, and compared to VS 2013. What you described is completely normal. VS 2012 used to step in Form_Load and similar on F10 and F11, VS 2013 no longer does it. So it seems like your VS 2013 is working as expected.
Microsoft probably has a reason to not allow to step into a property by default.
Properties are supposed to be mostly get and set and not contain a whole lot of implementation in it. But that may not be the case all the time.
If somebody is trying to step into a property that means this developer is suspecting something in that property that may be causing problems. So by default this behavior needs to be reversed and allow stepping into properties.
For now this is how you can enable stepping into properties.
Go to Tools > Options menu in Visual Studio.
Goto Debugging > General menu item in left pane.
In right view you will see and option Step over properties and operators (Managed only). Uncheck this option and then you are all set.
Enable step into properties in Visual Studio Debugger
If the above didn't work then follow this
In the Options.Keyboard page, please select "Debug.StepOver" from the command listbox, and then put focus to the "Press shortcut keys" textbox and press F10, click Assign button to re-assign shortcut, does it work?
You can also try to run Visual Studio under safe mode, which will prevents all third-party VSPackages from loading when Visual Studio starts; if the issue disappear under safe mode, you may consider checking your installed add-ons or VSPackages.
Second, to log all activity of Visual Studio to a log file for further troubleshooting, please use the /Log switch, and post the log file content here, so we can do more investigation on it.
If this feature works well before, and suddenly behave abnormally, it usually indicate that some files or configurations of Visual Studio installation is corrupted or missed, you can:
Restores Visual Studio default settings by using "Devenv.exe /ResetSettings" command. Please backup your settings before restore to default settings.
Repair/reinstall Visual Studio;
To repair Visual Studio In the Add or Remove Programs dialog box, select Visual Studio then click Change/Remove.
I found I had to run VS as Administrator to debug properly. I also do a clean solution prior to debugging, especially on x64 machines. If you put a manual debug breakpoint in the code and the IDE indicates it can't stop at that point, then it's possible that the debugger is out of sync with the source code.
An idea to test it in a short way:
Create a Hello World console app.
1 Module Module1
2
3 Sub Main()
4 Console.WriteLine("Hello")
5 End Sub
6
7 End Module
Build first.
Put the cursor in line 4 (before each step), commands should start Debug Mode if you are in Design Mode.
F10 (StepOver): Should break on line 3
F11 (StepInto): Should break on line 3
CTRL+F10 (RunToCursor): Should break on line 4
If it is working properly: Maybe the assembly which containing the entry point of your program had modified and wasn't been rebuilded, or there is somthing other problem with the point where the control expected to break.
If it doesn't work as expected on the sample, I think you should ask on MSDN FORUM or make a bug report.
I don't know why they might have intent to change this behavior.
It is working for me in my 2013 Express Edition with C# recently.
I found what I think is an acceptable workaround for the non-functioning F10/F11 Keys. They are probably the most used keys in stepping through code, and it is a real pain to click on debug and select the key from the dropdown.
I got around this shortcoming by adding icons to the toolbar for these operations.
If you are not sure how to do this, On the Debug toolbar click on the down pointing arrow near the right side of the bar. Click on Add or remove buttons.
Select Customize...
Select Add Command
Select Debug
Scroll down to the desired key (Step over / Step into)
You once clicked, you will see the two icons added at the left side
of the toolbar, Unfortunately they are the same Icon, but with a
little use, you should be able to select the right key to click on.
I actually prefer this method to trying to remember which function key
to press.
On many branded laptops, there is an extra button "Fn", Press "Fn" and "Esc" together. Functional keys will be enabled in visual studio.
Kindly press Fn key and Esc (with Lock with Fn label).
Sometimes it gets locked and Media Player buttons get activated.
Sounds stupid to ask but what type of keyboard do you have? I know some keyboards have different modes that allow you to set different profiles for keys based upon the application. I use the feature with my Microsoft Natural keyboard. However I have had problems with the profile still being active when I switch into Visual Studio and then F10, etc doesn't work correctly.
I faced the problem that F10/F11 doesn't work but the breakpoint works.
Once I uninstall the Security Software and unload the relevant drives it works again.
So my advice is that. And I guess it's due to the drives, so if these don't work just try to unload those questionable drives may connected with this question.
Using Logitech MX 3000 Keyboard, I've upgraded to the last setpoint version and these keys work now perfectly. (Driver version 5.90.41)
I am trying to debug my VB.net app in Visual Studio Express 2010, when I realized my changes will not update on my form-on the designer or in the code. After looking online, I found that you should clear out the "Debug" folder under the bin. That worked-for only one time. Now it went back to the older version and when I delete it again, it doesn't change. When I build the project and run it from the "Release" folder, it works perfectly, but when a error occurs at runtime, it won't show where the error is because it is running independently.
Thanks in advance.
(I have Windows XP SP3)
I had the same problem. Frustrating problem....? Close the project, go to debug bin/folder, delete these files, reopen project and rebuild it (F5).
- .exe
- .pdb
- .vshost.exe
- .vshost.exe.manifest
- .xml
it works 99.99%.......thanks
Before I'd create a new project, I'd copy all of the code-behind (including the code that creates the controls that you're not supposed to touch) into another form. That may be all you need to do. Try compiling that form and running it and see if it's good. If so, you won't have to create a whole new project and can just delete the old form.
I would think there's something causing this that would be much easier to to fix. Are there any config files or anything like that? Are you building to the right location?
It's been a while since I've done winforms, but I remember this happening in VS 2005 and I just created a new form and copied the code-behind into another winform and compiled.
Hope this helps.
mmm... if it was for me, with such a weird bug, i would create a new project then insert the files (not as a link, but a copy) in the project, and i most likely all will work fine after... Faster than finding where-the-hell is that wrong parameter...
So how do you do that ? Well create a new project, choose the folder and name, change namespace in settings if needed, then in project explorer Add existing item, then Browse and select your code and xaml (and other maybe) files. Let us know.
This happened to me as well. I believe the /bin and /obj folders of my application must've been locked for by some other application. Before manually deleting them I tried running Visual Studio as an administrator and did a Clean and a Rebuild which worked. If it doesn't work for you, try deleting the folders manually.
Close VS
Press Ctrl + Alt + Delete
Choose "Task Manager"
In the "Process" tab in "Task Manager" find your "ProjectName.EXE" and click "End Task"
Restart VS
I have the same problem, but i changed the solution config next to the start button from debug to release and that fixed my problem, try it :)
"Save all" works for me in VS 2010 VB, in Debug and Release mode.
I put the "Save all" icon next to the Run and Build icons.
First make sure your Localizable Property of you form is set to FALSE