Visual Studio 2013 - Cannot merge Views - visual-studio

For a couple of weeks now I have been unable to merge Views within Visual Studio 2013 in response to conflicts when getting Source Code from Visual Studio Team Services. I am sure I used to be able to this (we recently moved from Visual Studio Professional 2012 so I cannot be one hundred percent certain - automerging may have been sufficient in the early days of the project).
The "Accept Merge" and move to next change/conflict buttons are all greyed out and inoperable. See screenshot snippet-
This originally only happened with Views, but now seems to affect some other classes. Changes are highlighted and indicated on the scroll bar so the diff tool otherwise appears to be functioning. This only originally affected me, but now affects a new colleague into the team.
I can still either Keep Local Version or Take Server Version but this is rarely sufficient. This leaves me manually altering the local copy to apply changes highlighted by the merge tool. (Edit - See a better workaround in "Second Update" below).
Has anyone come across this before?
Visual Studio 2013 Premium (patch RTM/Update 1/Update 2 - all with the same problem), with Resharper 8.2 (originally 8.0.2) C# and Web Essentials installed. Running on Windows 7 Professional x64.
Project is ASP.NET 4.5 using MVC 5.1.2 (now additionally updated from MVC 5 where the problem first occurred) (upgraded from MVC 4 following the upgrade instructions on the ASP.NET website) in C#, using latest versions of Razor (3.1.2) and Entity Framework (6.1.0 RTM).
Edit: Initially a repair install of Visual Studio 2013 appeared to have fixed the issue. It has now however returned exactly as it was before. Since it took an hour to do the repair I cannot repeatedly do this in order to merge views. I am currently able to round trip the solution between Visual Studio 2012 Update 4 and Visual Studio 2013 in order to do merges in Visual Studio 2012 where it is working normally.
Second Edit: I am currently manually resolving conflicts by selecting the desired code (local/server), saving the merge window and then closing it which will prompt to accept the merge result. This seems to function but is obviously sub-optimal. It may however be helpful for other users.


In the event, installing Resharper 8.1 on top of 8.02 appears to have fixed it fixed it briefly before the problem returned yet again. I had previously completed a repair install of Visual Studio Premium 2013 as well - which briefly seemed to have fixed it before it broke again. I only mention it in case the fix is cumulative.
I am unclear if it was a bug in Resharper that was somehow preventing the merge, or a persistent problem with the installation that the upgrade cleaned up (Resharper removes previous versions and then installs updates, rather than attempting to install over the top). Update - I am extremely confident that this is not related to ReSharper and that it was the configuration of Visual Studio as a result of re-installing the extension and not the extension itself that fixed the issue.
In either case, the issue (for now) seems to have disappeared and this seems to be related to the upgrade, or is an extremely strong co-incidence.
Colleagues with the same versions of Visual Studio and Resharper, working on the same project, the same version of Windows and (in one case) the same hardware were not affected, so it seems likely it is an edge case niche issue caused by corrupted data somewhere.
I have a current working theory that this is related to different patch versions of Visual Studio (for example Visual Studio 2012 Update 2, Visual Studio 2013 RTM, Visual Studio 2013 Update 1, Visual Studio 2013 Update 2. This only affects Visual Studio 2013 for us.


Simple solution I use is carry on with your manual merge process once you are done simply Close the Merge-* tab (the one you are using to merge files) this will bring up a prompt for confirming if you want to Save the changes made (this is the merge changes you made to your local file) click 'yes' Now it comes back to Resolve Conflicts tab and brings up another prompt asking if you want to Accept Merge Result, click 'yes'(this is same as the button Accept Merge)


Since you have VS2012 installed and merge is working there, you can create a link to its TF.exe in VS2013, similar to one on the picture below, and fix the issues there. Set Command to c:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\TF.exe and Arguments to resolve.
You do that in Tools->External Tools.

Related

Is it Possible to vs-15 project open from vs-13 without any error?

I am using Visual Studio 2015, but I have to show my project from Visual Studio 2013 pc, Is it harmful for solution file? or any file? Visual Studio 2015 have some extra feature, that cant's contain Visual Studio 2013. Now how can I solve it?

I want to recommend not to mix different versions of Visual Studio. Please strictly create different folders for different versions e.g . one for VS2013 and another for VS2015.
You know - different versions installed on one PC is possible.
If you really want to go one version back to show your VS2015 project in a VS2013 IDE make sure you have a backup in a safe place. You maybe warned - don't make the mistake of mixing code versions when you switch from one PC to another.
Try to open and show for your needs in your special development environment by yourself it is possible but be careful like mentioned above. Having used the highest dotnet version possible in VS2015 you'll get errors.

How do I add versions to “Visual Studio Version Selector”, my list is empty

I have VS 2008, 2010, and 2012 installed.
Initially, VS2013 Team Explorer was installed (Shell only). I uninstalled that.
Now, the Visual Studio Version Selector shows an empty list when executing a .sln file. Nothing shows.
How can I repopulate this list? Where is it stored? Registry? I tried to find entries, but since it doesn't actually have any items in the list, I couldn't search for a specific string.

I just encountered the same issue after installing Visual Studio 2015 parallel to an existing 2013 installation. In my case it turned out that that the problem was related to the solution file itself: It seems that the version selector does not like BOMs etc. (don't know how the solution got crippled, though). Make sure that the solution starts with
Microsoft Visual Studio Solution File, Format Version 12.00
and has no space, non-printable character etc. before that. After saving the file, the effect should be immediately visible with the correct icon returning.

I just ran into a similar problem where this dialog started popping up after a recent Windows Update (Win10) on 1/6/2018. That update caused all sorts of havoc in terms of broken file associations.
I tried searching for solutions and trying a few things but everything was overly complicated and messy.
My solution was to run the Visual Studio (2013) repair.
After the repair, I did receive a warning (from vs installer) about update 3 failing to update but I restarted the computer and sln files can now open without needing that version dialog. Everything seems to be compiling and running fine as well.

Just ran into this situation for VS2017 then I realized I have unfinished updates for Visual Studio when checking Visual Studio Installer.
The installer displayed a hint that I should restart my computer to complete the update and after doing so, the version selector works again.

VS2013 cannot add item to package

I'm using VS2013 to development and maintain a couple of SP2013 projects. However, I think somehow I managed to corrupt one of the projects.
When I go to the "Package.package" designer, I see only (mapped SP) folders in there (it should also include the feature of the project). When I double-click, thus remove, one of these and try to re-add it, I get the following error msg
http://i.imgur.com/nC8RdOq.png
Same goes when I try to add the feature to the package
What's also strange is that if I go into the Feature designer, I cannot add any items. VS gives a similar type of err msg:
http://i.imgur.com/wqC5nAg.png
Few more details:
the projects were SP2010 projects and I successfully converted these to SP2013 some time ago.
using Visual Studio Premium 2013, Update 3, running as an administrator.
tried removing the feature and re-adding it; did not help.
tried running VS in safe mode, resetting the user settings via the command line devenv; did not help.
tried closing the designer, VS, rebooting; did not help.
i am able to add/remove items to the package/feature in other projects so I suspect it not to be a VS2013 bug

I just had the same Issue when adding items to feature or including features in package. I solved it by updating Visual Studio 2013 Developer Tools.
After updating to: Microsoft Office Developer Tools for Visual Studio 2013 - August 2015 update

Are there any functional differences between a VS2012 and VS2013 Solution?

The title of this question probably seems a bit convoluted so let me explain it in more detail.
I work for a company that has recently requested that all their pre-VS2013 Projects and Solutions be upgraded to VS2013. During my initial upgrade tests I noted that some of the solutions prompted for an Upgrade to be functionally sound under VS2013.
These Solutions/Projects typically launched the Migration Wizard and presented the message that non-functional changes to the Project were required to run under VS2013 and as long as there were no errors present afterward, the Projects compiled and ran without any issue.
While there were other VS2012 Solutions/Projects that displayed no dialogs whatsoever and simply ran under VS2013 without issue.
My initial presumption was since the latter mentioned Projects weren't identified by VS2013 as having any components that required alteration for the upgrade; that they were simply upgraded behind the scenes, compiled without error and simply ran.
But after a short conversation with the Company Supervisor and a peek at the Solution files, it appears that those Solutions are still configured for VS2012 and not VS2013.
Below are a few lines of code from each Solution File:
VS2013 Solution File
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
VisualStudioVersion = 12.0.30110.0
VS2012 Solution File
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2012
As you can see the VS2012 Solution File indicates # Visual Studio 2012 while the VS2013 Solution File shows # Visual Studio 2013 with an additional line appended to the file stating VisualStudioVersion = 12.0.30110.0
So the real question/concerns here regarding this migration effort are:
Is there any way to FORCE a VS2012 project to VS2013 as opposed to simply opening the project/solution under VS2013
Are there any potential caveats that should be taken into consideration when at some point VS2012 becomes outdated/deprecated by Microsoft? E.g. If tomorrow VS2012 were to become obsolete would there be potential areas of concern for these types of Projects running in a Production Environment?
The targeted goal is to have all our Projects and Solutions migrated to and running under VS2013 for continuity of the environment and simply do away with any Pre-VS2013 items.
Thanks

The ability to open projects created in earlier VS versions without converting them was first added to VS2012. By popular demand, moving to a new VS version could be pretty painful if not all members of a team migrated at the same time.
There is no point about fretting about this, VS2013 just doesn't have any trouble opening and saving projects like this. Nor does it have a way to force the conversion. In the olden days it could be done by running devenv.exe with the /upgrade option. Not sure if that still works, you'd have to try. I've seen SO users recommending editing the project file, I do not think that's a good idea.
It will automatically prompt you for an upgrade when you add any feature that wasn't supported in a previous release. Hard to come up with examples of that for VS2013, beyond Windows Phone 8.0 projects, VS2013 is a relatively minor increment from VS2012.

Why is Visual Studio 2013 very slow?

I'm running Visual Studio 2013 Pro (RTM version) on my formatted PC (Windows 8.1 fresh install).
I don't know why, but Visual Studio 2013 Pro is very very slow! Slow for building, debugging, navigating in the IDE... my hard disk drive LED is not lighting up at all!
I'm on a little MFC (C++) project using the Boost library.
Any ideas?

It is something concerned with the graphics drivers. If you update them you will be fine.
Or you can disable the hardware graphics acceleration in Visual Studio according to these steps:
In Visual Studio, click "Tools", and then click "Options".
In the Options dialog box, navigate to the "Environment > General" section and clear the "Automatically adjust visual experience based on client performance" check box. (Refer to the following screen shot for this step.)
Clear the "Use hardware graphics acceleration if available" check box to prevent the use of hardware graphics acceleration.
Select or clear the "Enable rich client visual experience" check box to make sure that rich visuals are always on or off, respectively. When this check box is selected, rich visuals are used independent of the computer environment. For example, rich visuals are used when you run Visual Studio locally on a rich client and over remote desktop.
References:
You experience performance issues, product crashes, or rendering issues in Visual Studio 2013

Try to set Current source control plug-in to None (menu Tools → Options → Source Control), if you are using the Microsoft Git provider, which seems to slow Visual Studio 2013 down more and more the larger the repository gets.
I had the whole Dojo Toolkit framework under source control using the Microsoft Git provider, and it got to the point where there were delays from the time I hit a key to the time the glyph would appear on the screen. That bad.
When/if you need Git again, you can switch to the TortoiseGit provider or Git-Extensions, both will work without slowdown. I like Git-Extensions, personally.

I too have struggled a bit with bad performance in Visual Studio 2013 (Premium). Pretty much the same issues as TS had. Slow navigation, scrolling, building... just about everything. Luckily I have manage to solve my own problem by disabling Synchronized Settings in Visual Studio.
Go to menu Tools → Options → Environment-Synchronized Settings and remove this option by unchecking the checkbox.

In the case of web applications, another cause of slow building and debugging (but not IDE navigation) could be the Browser Link feature.
I found that with this switched on, building would take 4 times longer and debugging was painful - after every postback, web pages would freeze for a few seconds before you could interact with them.

I was using a solution upgraded from Visual Studio 2012. Visual Studio 2013 also upgraded the .suo file. Deleting the solution's .suo file (it's next to the .sln file), closing and re-opening Visual Studio fixed the problem for me. My .suo file went from 91KB to 27KB.

I had the same problem and the only solution that worked for me was to follow the three steps presented below:
Clean the WebSiteCache folder (you may find it at
C:\Users\%USERNAME%\AppData\Local\Microsoft\WebSiteCache)
Clean the "Temporary ASP.NET Files" folder (find it at
C:\Users\%USERNAME%\AppData\Local\Temp\Temporary ASP.NET Files)
Restart Visual Studio

What fixed it for me was disabling Git by setting Current source control plug-in to None in Visual Studio, menu Options → Source Control:

This issue seems to be because of uninstalling the SQL Server Compact edition (4.0).
I was having this issue, and it got fixed after installing the SQL Server Compact edition 4.0.
On closing Visual Studio 2013, I was getting a message to install SQL Server Compact edition as a C++ project needed some thing... can't put finger on anything.

Resolve this issue by installing Microsoft SQL Server Compact 4.0
Microsoft SQL Server Compact 4.0

I can advise an option like this.
CodeLens can be disabled like as at the picture. It gives a lot of performance goodness.

If you are debugging an ASP.NET website using Internet Explorer 10 (and later), make sure to turn off your Internet Explorer 'LastPass' password manager plugin. LastPass will bring your debugging sessions to a crawl and significantly reduce your capacity for patience!
I submitted a support ticket to Lastpass about this and they acknowledged the issue without any intention to fix it, merely saying: "LastPass is not compatible with Visual Studio 2013".

I had the same problem and all the solutions mentioned here didn't work out for me.
After uninstalling the "Productivity Power Tools 2013" extension, the performance was back to normal.

One more thing to check; for me it was Fusion logging.
I'd turned this on a very long time ago and more or less forgotten about it. Getting rid of the 5000+ directories and 1 GB of logged files worked wonders.

There is a good workaround for this solution if you are experiencing slowness in rendering the .cs files and .cshtml files.
Just close all the files opened so that the cache gets cleared and open the required files again.

Visual Studio Community Edition was slow switching between files or opening new files. Everything else (for example, menu items) was otherwise normal.
I tried all the suggestions in the previous answers first and none worked. I then noticed it was occurring only on an ASP.NET MVC 4 Web Application, so I added a new ASP.NET MVC 4 Web Application, and this was fast.
After much trial and error, I discovered the difference was packages.config - If I put the Microsoft references at the top of the file this made everything snappy again.
Move the Microsoft* entries to the top.
It appears you don’t need to move them all - moving say <package id="Microsoft.Web.Infrastructure" has an noticeable effect on my machine.
As an aside
Removing all contents of the file makes it another notch faster too*
Excluding packages.config from Visual Studio does not fix the issue
A friend using Visual Studio 2013 Premium noticed no difference in either of these cases (both were fast)
UPDATE
It appears missing or incomplete NuGet packages locally are the cause. I opened the Package manager and got a warning 'Some NuGet packages are missing from this solution' and choose to Restore them and this sped things up. However I don’t like this as in my repository I only add the actual items required for compilation as I don’t want to bloat my repository, so in the end I just removed the packages.config.
This solution may not suit your needs as I prefer to use NuGet to fetch the packages, not handle updates to packages, so this will break this if you use it for that purpose.

For me, the problem was the Start page -- it was downloading content and causing Visual Studio to hang.
The only solution for me was to:
Kill the DevEnv process from Task Manager
Start Visual Studio in Safe Mode from the command line:devenv.exe /safemode
Go to menu Tools → Options, and select the Environment/Startup options
Choose "Show empty environment" for the startup action
Close Visual Studio
Restart normally

Running unit tests was slow. It was a ReSharper issue.
Menu ReSharper → Options → Environment → General ... Clear Caches
Menu Tools → Options → ReSharper → General ... Suspend Now
Close Visual Studio
Delete the .suo file.
Open Visual Studio again.
Re-enable ReSharper.

I also had an issue with a slow IDE.
In my case I installed
ReSharper
Npgsql (low chance to cause the problem)
Entity Framework Power Tools Beta 4
The following helped me a bit:
Disabled synchronization - menu Tools → Options → Environment-Synchronized Settings
Disabled plug-in selection - menu Tools → Studio → Options → Source Control.
Disabled Entity Framework Power Tools Beta 4 - menu Tools → Extensions and Updates
Uninstalled JetBrain's Resharper - WOW!! I am fast again!!

Change the Fusion Log Value to 0. It solved my issue.
This is the FusionLog key in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion
Check ForceLog value (1 enabled, 0 disabled).

I was also facing this issue for quite long time. Below are the steps that I perform, and it works for me always:
Deleting the solution's .suo file.
Deleting the Temporary ASP.NET Files (You can find it at find it at %WINDOW%\Microsoft.NET\Framework\Temporary ASP.NET Files)
Deleting all breakpoints in the application.

Visual Studio 2013 has a package server running, and it was spending up to 2 million K of memory.
I put it to low priority and affinity with only one CPU, and Visual Studio ran much more smoothly.

Performance Explorer
Have you been using menu Analyze → Performance and Diagnostics? I have! It's awesome! But you may want to clean up.
Open the Performance Explorer. If you collapse all of the items in there, select all, then you can right click and do Delete.
My solution opens faster and is in general running much faster now.
Also you may notice changes to your sln file as shown. For me, this section was deleted from the sln.
GlobalSection(Performance) = preSolution
HasPerformanceSessions = true
EndGlobalSection

In Visual Studio 2015 Community edition, I've experienced a very (very) slow IDE after changing the "Environment Font" on menu Tools → Options... → Fonts and Colors.
Reverting this options back to the default value ("automatic") solved it immediately.

I had similar problems when moving from Visual Studio 2012 → Visual Studio 2013. The IDE would lock up after almost every click or save, and building would take several times longer. None of the solutions listed here helped.
What finally did help was moving my projects to a local drive. Visual Studio 2012 had no problems storing my projects on a network share, but Visual Studio 2013 for some reason couldn't handle it.

I had a Visual Studio 2013 installed, and it was running smoothly. At some point it started to get sluggish and decided to install Visual Studio 2015. After install, nothing changed and both versions were building the solution very slow (around 10 minutes for 18 projects in solution).
Then I have started thinking of recently installed extensions - the most recent installed was PHP tools for Visual Studio (had it on Visual Studio 2013 only). I am not sure how can an extension affect other versions of Visual Studio, but uninstalling it helped me to solve the problem.
I hope this will help others to realize that it is not always Visual Studio's fault.

I added "devenv.exe" as an exclusion to Windows Defender. This solved my problem completely. People can try this as their first try.

I have the same problem, but it just gets slow when trying to stop debugging in Visual Studio 2013, and I try this:
Close Visual Studio, then
Find the work project folder
Delete .suo file
Delete /obj folder
Open Visual Studio
Rebuild

None of the suggestions worked for me, but I did solve my problem. I had tried most of the other recommendations before coming to the following solution.
My Scenario/Problem:
Using Visual Studio 2017 with ReSharper Ultimate. Keyboard input in the IDE got super slow as others have described. The last change I made to my solution was to add a new web site project, so I looked into that. After trying a lot of things, I tried adding a second web site project, so I could try to replace the first one, and Visual Studio just tanked after that. It wouldn't even load the solution anymore.
My Solution:
I forced Visual Studio closed and then I removed the newly added web site project(s) from the .sln file using Notepad. After saving and starting Visual Studio, my solution loaded quickly and everything seemed to be back to normal. I added a new Web Site with a slightly different configuration (see the thinking below), and the problem did not present itself again.
My Thinking:
I think the problem stemmed from creating the new web site project and using a file system path to a network share that is hosted in Azure. I'm working over VPN which tends to slow things down, and I occasionally experience various routing problems with some services, so my problem/solution might be a bit of a snowflake. I changed the file system path to be a local repository and will publish the files as needed which seems like a much better way to go.

I had a Visual Studio behavior where the typing was slow for my HTML files. Previously when I installed, I guessed that because my HTML files were generic HTML that the need to install any web development tools from the workload component of the installer was unnecessary. I went back and installed this bit and Visual Studio behavior became as I expected it.

This already has a bunch of answers here, but a general way to easily boost Visual Studio is to clear your temp files.
Press the Windows Key and R, and enter 'temp'. Press enter, and provide any administrator permission if you need to. Then press Control A to select all, and hit the Del key. Remember to provide any administrator permissions, and if 'the item is already in use' then just press skip.
After this, Press Windows Key and R again, but this time type '%temp%'. Repeat the previous steps in the new directory.
Finally, empty the recycle bin.
This might not help a ton, but it should boost general performance.

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