Mediocre VB.Net student here, but not a total noob. I've been getting this error: "The source file is different from when the module was built. Would you like the debugger to use it anyway?"
I chose Form1.vb on the "Find Source: Form1.vb" open file dialog box that followed. After that, my program has been acting very weirdly. For example, I have codes inside the sub that handles Button1 click, and then I moved those codes somewhere. Now when debugging, when I click that button, it executes the codes that I just removed a minute ago!
I'm scared because I don't to waste the 2 months of hard work that I've already spent on this project. Too friggin stupid to remember to backup the whole thing. Stackoverflow, please don't fail me now.
As you have explained i think the scenario is your modified code is not build correctly.. once rebuild the entire solution.
Please be sure work in debug mode, and then try Clean solution and then "Rebuild All".
refer following links may also help you..
the source file is different from when the module was built
Warning given when debugging source code in visual studio 2010
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've made a program for my assingment, and code it entirely from home. Obviously I need to submit it and work on it from college, i've got about 13 hours until it's due and I cannot for the life of me figure out what these errors mean, I'm guessing its something to do with the paths of the files. To make it clear, the program does not open and it is not the original copy. I do have other copies and I have tried the same approach with the exact same luck. Thank you in advance.
Okay, an update. As I said, I copied it from home, and pasted it in the folder location that it is calling below, however, it's calling an older version of the game which has no relevence to the game(number guessing game), from a location two files up from the actual vb files. Is there a way i can change what the project opens?
In your second picture just drag 'Form1.vb' to the solution Explorer. That way it can recognize your form. I have encountered this problem before and I just did what I said above.
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
I created a script in Outlook 2003 VBA that watches for new appointments, and sets them to tentative and no reminder as I create them. I find that seemingly at random, the VBA editor will open itself. It doesn't happen when I use the new script, but it did happen this morning when I un-hibernated my laptop, for example.
The editor doesn't pop up any runtime errors or highlight any lines in the script, it's just there as if I had pressed Alt-F11 to launch it. Sometimes I close other apps and see that it's been sitting back there for a while.
This behavior has only been occurring since I created this new script. Any ideas why this would occur?
As stated in, Microsoft Support Center:
"This problem occurs only if the Microsoft Visual Basic Editor window
is maximized."
Solution:
Un-Maximize Visual Basic Editor and close it.
And you are done!
If you have previously set breakpoints, it may be that you still have a phantom breakpoint. Try choosing "remove all breakpoints" and see if that clears the problem.
Check also that you have not chosen "Break on all errors" under options, and that your error handler is functioning properly.
Believe it or not, this is a known issue. Check out this MS Support link:
http://support.microsoft.com/kb/829059
I have the same problem and found it while I was looking for a solution. Since it gives no advice, I kept searching and came across your post. I will come back with an update if I find a solution.
The MS page linked by Jaquez hints at the answer; just make sure you don't run the editor maximized, and the problem should go away. If you restore it to a non-maximized state, then resize it to take up the whole screen, it should remember its position.
It's a pain if you only have a small screen, but on a normal large monitor it works fine, and solved the problem for me.
I have the same problem, except that it only occurs when I've gone in and unlocked the VBA project for editing and haven't restarted Outlook. It seems to open up when I get a new email (that's when my VBA runs) so basically I just have to restart Outlook and lock the project back up.
Sorry I don't know what's really causing it, but locking the VBA project should fix the problem...
My solution was to search for the .otm file of my VBA project. It was stored under data\microsoft\outlook. I closed Outlook and deleted the .otm file. Restarted Outlook and it was solved.
Just wanted to add that I was running into a phantom breakpoint issue with VBA in excel. Clearing all breakpoints did not work for me, but I resolved it as follows: Copy all content from offending module into a text file. Delete module. Re-create module. Copy back in all text. Save. Phantom breakpoint gone.