I just upgraded from VS2015 to 2017, and intellisense highlighting of syntax errors has disappeared completely.
I tried some suggestions found online, mainly Edit->Intellisense->Refresh Local Cache, but that option is not there anymore.
Under Edit->Intellisense there is only Quick info which does nothing when I press it, and toggle completion mode which is greyed out
I'm using Windows 10, C++ project.
Do I need to delete some old files from VS2015 in order for intellisense to work again? like the VC.db file?
Thanks
When IntelliSense stopped working in some files, I just deleted the project cache, restarted Visual Studio and opened the project again. Bear in mind that some minor settings also get reset (like the selected architecture).
Step by step
View => Solution Explorer (in case it isn't already open)
Right click "Solution 'Project name'"
Click "Open Folder in File Explorer"
Close Visual Studio
Show hidden folders (Win10 How-to)
Delete folder ".vs"
Open Visual Studio and project (wait a few seconds)
Hope this helps. -Minding
If you encounter a file in which the intellisense or error list is not functioning properly, look at the top-left corner of the navigation bar and check to see if that file is marked as “Miscellaneous Files”
If it is, the steps to solve the issue is:
Go to the file inside Solution Explorer.
Right-Click file and select Exclude From Project.
Right-Click your project/folder where the file was and click Add Existing Item, and add the file you just removed back into your project.
This should fix whatever issues you're having. (Tip: You can multi-select source/header files, so this does not need to be done one at a time).
Right-click on solution and select Rescan Solution (Visual Studio 2017). This should re-sync IntelliSense with solution data.
Please try to click Tools->Text Editor->C/C+±>Advanced, under IntelliSense, set
Member List Commit Aggressive to True and recheck this issue. Also, set
Use Aggressive Member list for Auto Member list to *False.
In my case, the project was referring to 2 different versions of the same library. I uninstalled one of the versions and intellisense started working.
Related
Visual Studio Intellisense is bugging out and only works on my current startup project.
I'm in the process of building a multi-project solution and as of earlier today Visual Studio decided that Intellisense would stop colour coding and providing information about code that I hover over with my mouse.
this is happening in all files within the solution apart from the single one in my current Startup Project.
I'm unsure whether the fact that that file is inside the startup project is important or not or what at all caused the bug to begin the first place.
I've been searching around for a while and tried just about every 'solution' that has come up.
I've changed the relevant settings off and on again.
I've deleted the dynamic .suo file in the hidden .vs folder.
I've reopened the files, visual studio, updated, made sure intellisense wasn't doing something in the background.
Apparently this bug can be caused by a corrupt .ncb file that lives in the solution directories, but I've failed to locate a file with that extension anywhere.
I'm also not using any extensions or such that mess with Intellisense's operation.
Are there any other possible things to try (hopefully not reinstalling) or just continue writing code in black and white?
Intellisense working:
Intellisense not working:
Maybe you can check your intellisense setting in Tools > Options > Text Editor > C/C++:
This is a document about intellisense in C++. Hope it can help you.
If it doesn't work you can try to Reset all setting in Tools > Import and export settings. Or try to repair visual studio in visual studio installer.
If the above methods don't work, maybe you can only try to reinstalle visual studio.
As a starting developer I am running into some problemes with Visual Studio 2017. I developed some weeks without any problems, but now I can't add a project under source control.
If I add a blank solution I used to be able to add a new project to that solution, but that option isn't visible anymore. It happend when I added a project under source control. How can I undo this?
missing menu (picture from a manual made earlier)
Solution: File --> Open --> Open from source control --> select the right project.
Now new projects can be added to the solution. Save this solution and you can open it when VS starts.
Not sure, but see if this works. This was in visual studio 2013, but is the same problem.
Click here!
I've noticed that the auto complete feature in Visual Studio no longer works properly once my project has reached a certain size (in my case ~4,100 lines of code). I've also noticed that performance also degrades once the number of third-party libraries increases (namespaces and class attributes and methods are no longer visible).
Is there a way of manually updating the auto completion database or create a new one for an existing project?
I am currently working under Visual Studio 2008, but I have experienced this issue in Visual Studio 2010 as well.
For VS2015, 2017 and VS2019 close Visual Studio and delete the .vs folder in the same folder as the solution. It contains among other things the intellisense database (it should be possible to delete only the files specific to intellisense, if we knew which ones). Note that if you delete the whole folder you will lose your window layout configurations etc.
For previous versions, close Visual Studio and navigate to your project folder. The *.sdf file there contains the intellisense database- if you delete this files and reopen your project in visual studio, it rebuilds the cache.
Deleting the sdf file solved the problem for me.
Sometimes working with a big solution (mainly C++ projects) becomes
unbearably slow. To fix it you need to close the solution and go
delete the .SDF file. After that it returns to normal again, for about
a week, or so until you need to do it again.
The underlying cause is that the SDF file gets fragmented and,
according to xperf profiling I've done, VS will sometimes do 20,000+
random reads from it when changing between debug and release. Putting
the SDF files on an SSD fixes the problem but should not be necessary.
VS needs to use the SDF file more efficiently and not do blocking SDF
operations, ever.
Source: https://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/2255455-fix-the-delete-sdf-file-problem
In Visual Studio 2022, open Tools -> Options -> [type in "database" in the search box] -> Text Editor -> C/C++ -> Advanced -> Recreate Database = TRUE, and then reopen the solution.
In VS2017 I often run into this situation when I use interop to call CPP from C#, when something is changing on the CPP side.. e.g. constructor arguments.
Unload and reload the CPP project in the solution helps to solve the red lines..
I am using Visual Studio 2019 and have also been experiencing problems with Intellisense along with other features. I would be able to get through about 2 or 3 updates to a file before Intellisense stopped working along with code formatting.
The only way I was able to get things working again was to restart Visual Studio, I tried removing both the intellisense folder and the whole .vs folder but this didn't solve the problem, it helped but something else was going on.
I was finally able to fix this by turning off the Track changes option under
Tools->Options->Text Editor->General.
Right click on the solution and press "Rescan Solution".
It seemed to work for me.
For Visual Studio 2017 (and I think Visual Studio 2019 also), close Visual Studio, go into the .vs folder in your projects folder and delete all the contents apart from the .suo file, then reopen Visual Studio.
This way you can rebuild the Intellisense cache without losing your preferences.
After verifying daniol's results of Mar 15, I went into the .vs folder -> {MyProject} folder -> DesignTimeBuild folder and deleted the .dbtcache file and Intellisense now works "intelligently" with no loss of Window Layout or other .suo info. I suspect that the 'Diagnostics.DTBBLog' command offered by eq_ on Jan 4 did the same thing but that command seems no longer available, at least by that name.
For Visual Studio 2017 (and mainly using C# projects), the following has always worked for me:
Open a Command Window (View/Other Windows/Command Window) [Ctrl+W,A]
Enter the command "Diagnostics.DTBBLog" and press enter
No need to close solution and reload etc.
It was devastating to find out that for Visual Studio 2019 this command is removed...
Any time I scroll throught the intellisense list it disappears very fast, and I have no time to seek and select which I want. I also have Visual Assist X but it doesn't help, it happens with VA enabled and also when disabled.
Any idea which could be the cause and where to config intellisense to remain visible all time until you select something and press TAB/ENTER key? maybe there is some visible delay time config option in some file?
Thanks
Did you try to reset settings?
See here: Visual Studio 2005 Intellisense stopped working after ReSharper installation
Is the problem in all solutions are you are using just one?If so, try to delete .ncb file in solution directory.
Hope this helps.
I went to go turn on precompiled headers in a brand new project, so I went to go create the "/Create" setting for precompiled headers. But the property page is blank.
What happened, and how can I fix this?
This looks like a COM registration issue. It's hard to tell what caused it but the best bet for fixing is to repair the Visual Studio install. That should fix the issue.
Go to Control Panel and run "Add / Remove Programs"
Double click on "Visual Studio 2010 ..."
Click Next on the installer
Choose Repair / Reinstall
Complete the Wizard
I recently came across a similar issue (though I was using CMake to generate the project file), turns out it was this bug in VS2010. If you specify an absolute path for the source file in the project file, and it is on the same drive as the project file, then the property pages for that source file will not be visible. The suggested workaround is to create a new drive mapping for the drive where your source resides, and then to open the project from the mapped drive.
This happened to me this morning in my Visual Studio 2008, I read all the solutions in internet, I tried everything - reset setting, userdata, repair, uninstall and reinstall VS, but none solve my problem. I was almost going to reinstall the OS (Windows 10).
At last I found out after using a dir command in other project, AM/PM was replaced with strange words, it's because of my datetime format was changed (in my case, it was changed to Afar format). After reset to default, everything came back to normal.